Question

Calcule o Valor de x nessas equações do 1° grau a) 5x - 40 = 2 - xb) 20 + 6x = -2x + 26c) 3,5x + 1 = 3 + 3,1x​

Answer 1

a) 5x - 40 = 2 - x

5x + x = 2 + 40

6x = 42

x = 7

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b) 20 + 6x = - 2x + 26

6x + 2x = 26 -20

8x = 6

x = 6/8

x = 3/4

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c) 3,5x + 1 = 3 + 3,1x

3,5x - 3,1x = 3 - 1

0,4x = 2

x = 5

Espero ter ajudado