Question

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Answer 1

Respuesta:

a) 5(x+3) = 2x-3

5x + 15 = 2x - 3

3x = -18

x = -6

b) x - 10 = 5(x-2)

x - 10 = 5x - 10

0 = 4x

0 = x

c) 7(x-2) = 3(x+2)

7x - 14 = 3x + 6

4x = 20

x = 5

d) 2(2x-1) = 7(x+1)

4x - 2 = 7x + 7

-9 = 3x

-3 = x

e) 2(x+5) - 3x = x + 18

2x + 10 - 3x = x + 18

-x + 10 = x + 18

-8 = 2x

-4 = x

f) 3x + 5(1+2x) = 5x - 11

3x + 5 + 10x = 5x - 11

13x + 5 = 5x - 11

8x = -16

x = -2

g) 4(x+7) - 6 = 9(x-2)

4x + 28 - 6 = 9x - 18

22 + 18 = 5x

40 = 5x

8 = x

h) 3(2x + 3) - 4(x-5) = 1

6x + 9 - 4x + 20 = 1

2x + 29 = 1

2x = -28

x = -14

i) 7 - 3(2-x) = 10(x-2)

7 - 6 + 3x = 10x - 20

1 + 3x = 10x - 20

21 = 7x

3 = x

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