Question

1) (x-16)*9=126,
2) 28*(x+5)=224,
3) (x+76) :7=15

Answer 1

1) 9x-144=126
9x=126+144
9x=270
x=270:9
x=30

2)28x+140=224
28x=224-140
28x=84
x=84 : 28
x=3

3) x+76=15*7
x+76=105
x=105-76
x=29