Question

Решите уравнения
87×-67×=384
32×+14×-27×+5=100
(17×-8×+3)÷7=12

Answer 1

87х-67х=384
20х=384
х=384÷20
х=19,2

32х+14х-27х+5х=100
24х=100
х=100÷24
х=100/24
х=4 целых 4/24

(17х-8х+3)÷7=12
(17х-8х+3)=12•7
(17х-8х+3)=84
х=(84-3)÷9
х=9