Question

(6,97X-13,2X)умножить (1 11/89)=-5 2/9

Answer 1

$(6.97x-13.2x)*1 \frac{11}{89} =-5 \frac{2}{9}$
$-6.23x* \frac{100}{89}=- \frac{47}{9}$
$- \frac{623*100}{100*89} x=- \frac{47}{9}$
$-7x=- \frac{47}{9}$
$x= \frac{47}{9*7}$
$x= \frac{47}{63}$