Question

(92+5Х)·2+6=300                     (92-3Х)·6-40=296                 (71+4Х)·4=492
Решите 5 класс срочно!

Answer 1

(92+5Х)·2+6=300 
5х=300-6:2-92
5х=55
х=55:5
х=11

(92-3Х)·6-40=296
-3х=296+40:6-92
-3х=-36
х=-36:(-3)
х=12

(71+4Х)·4=492
4х=492:4-71
4х=52
х=52:4
х=13

Answer 2

(71+4*13)·4=(71+52)*4=123*4=492