Question

A: 20×-4=5× B:×+30=40 C: 4×=-8×+36​

Answer 1

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a) 20x - 4 = 5x

20x - 5x = 4

15x = 4

x = 15/4

x = 3,75

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b) x + 30 = 40

x = 40 - 30

x = 10

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c) 4x = - 8x + 36

4x + 8x = 36

12x = 36

x = 36/12

x = 3

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Bons estudos anjo :)