Question

Помогите срочнооо!!!!! ​

Answer 1

Ответ:

Пошаговое объяснение:

$-12.6*0.7+4.8*(-1.7)=-16.98\1)-12.6*0.7=-8.82\2)4.8*(-1.7)=-8.16\3)-8.82+(-8.16)=-8.82-8.16=-16.98$

$(-5.16+5.09)*(3.5-4)=0.035\1)-5.16+5.09=-0.07\2)3.5-4=-0.5\3)-0.07*(-0.5)=0.035$

$frac{4}{7} *(-5frac{5}{6} )-frac{5}{62} *(-4frac{3}{7} )=-2frac{41}{42} \1)frac{4}{7} *(-5frac{5}{6} )=frac{4}{7} *-frac{35}{6} =-frac{10}{3}$

$2)frac{5}{62}*(-4frac{3}{7} )= frac{5}{62} *-frac{31}{7} =-frac{5}{14}$

$3)-frac{10}{3} +frac{5}{14} =-frac{140}{42} +frac{15}{42} =-frac{125}{42} =-2frac{41}{42}$

$(-5frac{1}{4} -6frac{1}{6} )*(3frac{1}{4} -0.55)=-30.825\1)(-5frac{1}{4} -6frac{1}{6} )=-frac{21}{4} -frac{37}{6} =-frac{63}{12} -frac{74}{12} =- frac{137}{12} \2)(3frac{1}{4} -0.55)=frac{13}{4} -frac{55}{100} =frac{325}{100} -frac{55}{100} =frac{270}{100} \3)-frac{137}{12} *frac{270}{100} =-frac{12330}{400} =-frac{1233}{40} =-30frac{33}{40} =-30.825$