Question

реши уравнения х:3=250+60 у×2=100-40 14×z=20×7

Answer 1

1) х÷3=250+60
х÷3=310
х=310×3
х=930
930÷3=250+60
310=310

2) у×2=100-40
у×2=60
у=60÷2
у=30
30×2=60
60=60

Answer 2

×:3=250
×=250×3
×=750
y×2==100-40 100-40=60
y=60÷2
Y=30
14×z=20×7 20×7=140
×=140:14
×=10