Question

помогите, уравнения

Answer 1

1)
2×X=400+40
2×X=440
X=440÷2
X=220
2)
y+120÷3=510
y+40=510
y=510-40
y=470

Answer 2

1) X×2=400+40
X×2=440
X=440:2
X=220
220×2=440
440=440

2) Y+ 120×3=510
Y +360=510
Y=510-360
Y=150
150+360=510
510=510