Question

(х-16)*9=126; 28*(х+5)=224; (х+76)/7=15

Answer 1

1) (x-16)*9=126
9x-144=126
9x=126+144
9x=270
x=270:9
x=30
2) 28*(x+5)=224
28x+144=224
28x=224-140
28x=84
x=84÷28
x=3