Question

Решите уравнения: 13-7x+2=4 7x-2x+3=23 7x-4x-3+5x+3=63 12x+3=4x+35 Плиззз:*

Answer 1

13-7x+2=4

15-7х=4

7х=-11

х=-11/7

 

7x-2x+3=23

5х=20

х=4

 

7x-4x-3+5x+3=63

8х=63

х=7,875

 

12x+3=4x+35

8х=32

х=4

 

Answer 2

13-7x=4-2
13-7x=2
7x=13+2
7x=15
x=15:7
x=15/7

5x=23-3
5x=20
x=4

8x=63
x=63:8
x=7,875

12x+3=4x+35
12x-4x=-3+35
8x=32
x=4