ПОМОГИТЕ РЕШИТЬ УРАВНЕНИЕ 13-(52-7y)*(-3)=211. Created by ilya200501. matematika-ru

ПОМОГИТЕ РЕШИТЬ УРАВНЕНИЕ 13-(52-7y)*(-3)=211...

ilya200501 @ilya200501

August 2022 2 3 Report

ПОМОГИТЕ РЕШИТЬ УРАВНЕНИЕ 13-(52-7y)*(-3)=211

Flash3146

Verified answer

13-(52-7y)×(-3)=211
13+156+21y=211
21y=211-169
21y=42:21
y=2

0 votes Thanks 1

1asasas

Verified answer

(52-7у)*(-3)=211-13
(52-7у)*(-3)=198
52-7у=198:(-3)
52-7у=-66
-7у=-66+52
-7у=14
у=14:(-7)
у=-2
проверка
13-(52-7*(-2))*(-3)=211
13-(52+14)*(-3)=211
13-(66*(-3))=211
13+198=211
211=211

2 votes Thanks 1

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