Question

ajuda aí <3
3.(x+2)+5= x+12
x+4.(x-1)=23-2.(x+3)
7.(x-1)=2.(3x -1)

Answer 1

3.(x+2)+5= x+12

3x + 6 + 5 = x + 12

3x - x = 12 - 11

4x = 1

x = 1/4

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x+4.(x-1)=23-2.(x+3)

x + 4x - 4 = 23 -2x -6

5x + 2x = -6 + 4

7x = -2

x = -2/7

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7.(x-1)=2.(3x -1)

7x - 7 = 6x - 2

7x - 6x = -2 + 7

x = 5