Question

решите пожалуйста!!!!!!!!!!!

Answer 1

а)
$(4.479 - 3x) div 0.06 + 6.4 = 80 \ (4.479 - 3x) div 0.06= 80 - 6.4 \ (4.479 - 3x) div 0.06 = 73.6 \ 4.479 - 3x = 73.6 times 0.0 6 \ 4.479 - 3x = frac{736}{10} times frac{6}{100} \ 4.479 - 3x = frac{184}{5} times frac{3}{25} = frac{552}{125} = frac{4416}{1000} \ 4.479 - 3x = 4.416 \ 3x = 0.063 \ x = 0.021$
б)
$8.36 - 5.36 div (0.2x + 0.47x) = 7.56 \ 8.36 - 5.36 div 0.67x = 7.56 \ 5.36 div 0.67x = 0.8 \ 0.67x = frac{5.36}{0.8} = 6.7 \ x = 10$