Question

a)7x - 23 = 2x  + 22










b)5x +32 = 3x + 44












c) 4x -18 = - 3x + 17













d) 7x - 18 = 27 - 2x

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Answer 1

Resposta:

a) x = 9

b) x = 6

c) x = 5

d) x = 5

Explicação passo-a-passo:

a) 7x - 23 = 2x + 22

7x - 2x = 22 + 23

5x = 45

x = 45/5

x = 9

b) 5x + 32 = 3x + 44

5x - 3x = 44 - 32

2x = 12

x = 12/2

x = 6

c) 4x - 18 = -3x + 17

4x + 3x = 17 + 18

7x = 35

x = 35/7

x = 5

d) 7x - 18 = 27 - 2x

7x + 2x = 27 + 18

9x = 45

x = 45/9

x = 5