Question

Responda as questões no seu caden
1. Resolva as Equações em R
a) 2x + 6 = x + 18
b) 5x - 3= 2x + 9
c) 3(2x - 3) + 2(x + 1) = 3x + 18
d) 2x + 3(x - 5) = 4x + 9
e) 2(x + 1) - 3(2x - 5) = 6x - 3​

Answer 1

Resposta:

Explicação passo-a-passo:

a) 2x + 6 = x + 18

2x - x = 18 - 6

x = 12

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b) 5x - 3= 2x + 9

5x - 2x = 9+3

3x = 12

x = 12/3

x = 4

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c) 3(2x - 3) + 2(x + 1) = 3x + 18

6x - 9 + 2x + 2 = 3x + 18

8x - 7 = 3x + 18

8x - 3x = 18+7

5x = 25

x = 25/5

x = 5

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d) 2x + 3(x - 5) = 4x + 9

2x + 3x - 15 = 4x + 9

5x - 15 = 4x + 9

5x - 4x = 9+15

x = 24

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e) 2(x + 1) - 3(2x - 5) = 6x - 3

2x +2 - 6x + 15 = 6x - 3

- 4x +17 = 6x - 3

17+3 = 6x + 4x

20 = 10x

10x = 20

x = 20/10

x = 2