Question

найдите значение выражения (4 715-2 35)*15= 2) ( 1 1117+2 1534)*34= 3) ( 5 16 - 2 23)*12=

Answer 1

1)(47/15-13/5)*15=(47/15-39/15)*15=8/15*15=8 2)(28/17+83/34)*34=(56/34+83/34)*34=139 3)(31/6-8/3)*12=(31/6-16/6)*12=15/6*12=30