(780-m:6)÷6=70 56:(36:y-2)=8

Question

(780-m:6)÷6=70 56:(36:y-2)=8

Answer 1

1)(780-m:6):6=70 2)56:(36:y-2)=8
780-m:6=70•6 36:y-2=56:8
780-m:6=420 36:y-2=7
m:6=780-420 36:y=7+2
m:6=360 36:y=9
m=360•6 y=36:9
m=2160 y=4