Question

Решите уравнения : а) x+(1200 -900)=1500; (50*30):y=15; c:(1200:2)=3

Answer 1

1200-900=300; x+1500=?
1500-300=1200
x=1200

50*30=1500 ;y=15 Y-?
1500/15=100

1200/2=600
600/3=200