Մաթեմ

  1. x+1=7

X=6

  • X-2=14

X=16

  • 2x+1=7

X=3

  • 3x+1=2x+4

3x-2x=4-1

X=3

5)2x+2=x+6

2x-x=6-2

X=4

6)4x-1=3x+4

4x-3x=4+1

X=5

7)3x+5=x+7

3x-x=7-5

X=1

8)4x-3=2x-3

4x+2x=3+3

X=3

9)5x+4=4x-1

5x-4x=4+1

X=5

10)7x-1=3x+7

7x+3x=7-7

X=21

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