Question

3- (EF08MA06) Resolva as equações: a) 7(x - 5) = 3(x + 1) b) 3(x - 2) = 4(-x + 3) c) 2(x + 1) - (x - 1) = 0 d) 5(x + 1) – 3(x + 2) = 0 i) = 8 - 4(2x - 3)​

Answer 1

Resposta:

Explicação passo a passo:

Resolva as equações:

a) 7(x - 5) = 3(x + 1)

7x - 35 = 3x + 3

7x - 3x = 3+35

4x = 38 (:2)

2x = 19

X= 19/2

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b) 3(x - 2) = 4(-x + 3)

3x - 6 = - 4x + 12

3x + 4x = 12+6

7x = 18

x = 18/7

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c) 2(x + 1) - (x - 1) = 0

2x + 2 - x + 1 = 0

x + 3 = 0

x = - 3

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d) 5(x + 1) – 3(x + 2) = 0

5x + 5 - 3x - 6 = 0

2x - 1 = 0

2x = 1

x = 1/2