Question

3x+21=10x

8x-30=3x+10

14x+2=4x+22​

Answer 1

3x + 21= 10x

3x - 10x= - 21

- 7x= - 21>> .(-1)

7x= 21

x= 21/7

x= 3

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8x - 30= 3x + 10

8x - 3x= 10 + 30

5x= 40

x= 40/5

x= 8

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14x + 2= 4x + 22

14x - 4x= 22 - 2

10x= 20

x= 20/10

x= 2