Question

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4x + 3 = 3x - 12
2x + 10 = x + 20
10x + 2 = 9x - 1
5x + 0 = 4x + 2​

Answer 1

Explicação passo-a-passo:

4x + 3 = 3x - 12

4x - 3x = -12 - 3

x = -15

2x + 10 = x + 20

2x - x = 20 - 10

x = 10

10x + 2 = 9x - 1

10x - 9x = -1 - 2

x = -3

5x + 0 = 4x + 2

5x - 4x = 2 - 0

x = 2