Question

(x-16)×9=126
28×(x+5)=224
(x+76)÷7=15

Answer 1

(х-16)*9=126
9х-144=126
9х=126+144
9х=270
х=270:9
х=30

28*(х+5)=224
28х+140=224
28х=224-140
28х=84
х=84:28
х=3

(х+76):7=15
х+76=15*7
х+76=105
х=105-76
х=29