Помогите пожалуйста 751 номер
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Ответил zhenyaM2002
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1.
![frac{52}{63} - frac{x}{63} = frac{25}{63} \ \
52-x =25 \ \
x=52-25 \ \
x= 27 \ \
frac{52}{63} - frac{27}{63} = frac{25}{63} \ \
frac{25}{63} = frac{25}{63}](https://tex.z-dn.net/?f=+frac%7B52%7D%7B63%7D+-+frac%7Bx%7D%7B63%7D+%3D++frac%7B25%7D%7B63%7D++%5C++%5C+%0A52-x+%3D25+%5C++%5C+%0Ax%3D52-25+%5C++%5C+%0Ax%3D+27+%5C++%5C+%0A+frac%7B52%7D%7B63%7D+-+frac%7B27%7D%7B63%7D+%3D+frac%7B25%7D%7B63%7D++%5C++%5C+%0A+frac%7B25%7D%7B63%7D+%3D+frac%7B25%7D%7B63%7D+ "frac{52}{63} - frac{x}{63} = frac{25}{63} \ \
52-x =25 \ \
x=52-25 \ \
x= 27 \ \
frac{52}{63} - frac{27}{63} = frac{25}{63} \ \
frac{25}{63} = frac{25}{63}")
2.
![frac{x}{38} + frac{14}{38} = frac{23}{38} \ \
x+14=23 \ \
x=23-14 \ \
x=9 \ \
frac{9}{38} + frac{14}{38} = frac{23}{38} \ \
frac{23}{38} = frac{23}{38}](https://tex.z-dn.net/?f=+frac%7Bx%7D%7B38%7D+%2B+frac%7B14%7D%7B38%7D+%3D+frac%7B23%7D%7B38%7D++%5C++%5C+%0Ax%2B14%3D23+%5C++%5C+%0Ax%3D23-14+%5C++%5C+%0Ax%3D9+%5C++%5C+%0Afrac%7B9%7D%7B38%7D+%2B+frac%7B14%7D%7B38%7D+%3D+frac%7B23%7D%7B38%7D++%5C++%5C+%0A+frac%7B23%7D%7B38%7D+%3D+frac%7B23%7D%7B38%7D+%0A "frac{x}{38} + frac{14}{38} = frac{23}{38} \ \
x+14=23 \ \
x=23-14 \ \
x=9 \ \
frac{9}{38} + frac{14}{38} = frac{23}{38} \ \
frac{23}{38} = frac{23}{38}")
3.
![( frac{12}{13} +x)- frac{5}{13} = frac{9}{13} \ \
( frac{12}{13} +x)= frac{9}{13}+frac{5}{13} \ \
x= frac{14}{13} - frac{12}{13} \ \
x= frac{2}{13} \ \
( frac{12}{13} + frac{2}{13} )- frac{5}{13} = frac{9}{13} \ \
frac{14-5}{13} = frac{9}{13} \ \
frac{9}{13} = frac{9}{13}](https://tex.z-dn.net/?f=%28+frac%7B12%7D%7B13%7D+%2Bx%29-+frac%7B5%7D%7B13%7D+%3D+frac%7B9%7D%7B13%7D++%5C++%5C+%0A%28+frac%7B12%7D%7B13%7D+%2Bx%29%3D+frac%7B9%7D%7B13%7D%2Bfrac%7B5%7D%7B13%7D+%5C++%5C+%0Ax%3D++frac%7B14%7D%7B13%7D+-+frac%7B12%7D%7B13%7D++%5C++%5C+%0Ax%3D++frac%7B2%7D%7B13%7D++%5C++%5C+%0A%28+frac%7B12%7D%7B13%7D+%2B+frac%7B2%7D%7B13%7D+%29-+frac%7B5%7D%7B13%7D+%3D+frac%7B9%7D%7B13%7D++%5C++%5C+%0A+frac%7B14-5%7D%7B13%7D+%3D++frac%7B9%7D%7B13%7D++%5C++%5C+%0A+frac%7B9%7D%7B13%7D+%3D+frac%7B9%7D%7B13%7D+ "( frac{12}{13} +x)- frac{5}{13} = frac{9}{13} \ \
( frac{12}{13} +x)= frac{9}{13}+frac{5}{13} \ \
x= frac{14}{13} - frac{12}{13} \ \
x= frac{2}{13} \ \
( frac{12}{13} + frac{2}{13} )- frac{5}{13} = frac{9}{13} \ \
frac{14-5}{13} = frac{9}{13} \ \
frac{9}{13} = frac{9}{13}")
4.
![(x- frac{21}{31} ) + frac{14}{31} = frac{25}{31} \ \
x- frac{21}{31}= frac{25-14}{31} \ \
x= frac{11+21}{31} \ \
x= frac{32}{31} = 1 frac{1}{31} \ \
(1 frac{1}{31} - frac{21}{31} ) + frac{14}{31} = frac{25}{31} \ \
frac{32-21+14}{31} =frac{25}{31} \ \
frac{25}{31} = frac{25}{31}](https://tex.z-dn.net/?f=%28x-+frac%7B21%7D%7B31%7D+%29+%2B+frac%7B14%7D%7B31%7D+%3D+frac%7B25%7D%7B31%7D++%5C++%5C+%0Ax-+frac%7B21%7D%7B31%7D%3D+frac%7B25-14%7D%7B31%7D++%5C++%5C+%0Ax%3D+frac%7B11%2B21%7D%7B31%7D++%5C++%5C+%0Ax%3D+frac%7B32%7D%7B31%7D+%3D+1++frac%7B1%7D%7B31%7D++%5C++%5C+%0A%281++frac%7B1%7D%7B31%7D+-+frac%7B21%7D%7B31%7D+%29+%2B+frac%7B14%7D%7B31%7D+%3D+frac%7B25%7D%7B31%7D+%5C++%5C+%0A+frac%7B32-21%2B14%7D%7B31%7D+%3Dfrac%7B25%7D%7B31%7D+%5C++%5C+%0A+frac%7B25%7D%7B31%7D+%3D+frac%7B25%7D%7B31%7D "(x- frac{21}{31} ) + frac{14}{31} = frac{25}{31} \ \
x- frac{21}{31}= frac{25-14}{31} \ \
x= frac{11+21}{31} \ \
x= frac{32}{31} = 1 frac{1}{31} \ \
(1 frac{1}{31} - frac{21}{31} ) + frac{14}{31} = frac{25}{31} \ \
frac{32-21+14}{31} =frac{25}{31} \ \
frac{25}{31} = frac{25}{31}")
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