Question

1)40+2х=3х-15

2)9х = 8х – 6 – х 

3)5(у+3)=10

4)3х – 4 + 2х = 6 +2х – 4 

5)3(2х+8) – (5х+2) = 0 


решите пж пж с полными ответами пж

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Answer 1

Ответ:

1) 40 + 2х = 3х - 15

40 + 15 = 3х - 2х

55 = х

2) 9х = 8х – 6 – х 

9х - 8х + х = - 6

2х = - 6

х = - 3

3) 5 (у + 3) = 10

5у + 15 = 10

5у = 10 - 15

5у = - 5

у = - 1

4) 3х – 4 + 2х = 6 + 2х – 4 

3х + 2х - 2х = 6 - 4 + 4

3х = 6

х = 2

5) 3 (2х + 8) – (5х + 2) = 0 

6х + 24 - 5х - 2 = 0

6х - 5х = 2 - 24

х = -22