Question

486:(5x+2)=12
28*(x+5)=224
(16m+5m):18=7​

Answer 1

486:(5х+2)=12

5х+2=486:12

5х+2=40.5

5х=40.5-2

5х=38.5

х=38.5:5

х=7.7

Ответ: 7.7

28*(х+5)=224

х+5=224:28

х+5=8

х=8-5

х=3

Ответ: 3

(16m+5m):18=7

21m:18=7

21m=7*18

21m=126

m=126:21

m=6

Ответ: 6