Question

Determine X
a)7(x-1)-2(x-5)=x-5
b)2(3-x)=3(x-4)+15
c)3(5-x)-3(1-2x)=42
d)(4x-6)-2x=(x-6)+10+14
e)(x-3)-(x+2)+2(x-1)-5=0
f)3x-2(4x-3)=2-3(x-1)
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Answer 1

Explicação passo-a-passo:

a)7(x-1)-2(x-5)=x-5

7x - 7 - 2x + 10 = x - 5

4x = -8, x = -2

b)2(3-x)=3(x-4)+15

6 - 2x = 3x - 12 + 15

5x = 3

x = 3/5

c)3(5-x)-3(1-2x)=42

15 - 3x - 3 + 6x = 42

3x = 42 - 12 = 30

x = 10

d)(4x-6)-2x=(x-6)+10+14

4x - 6 - 2x = x - 6 + 24

x = 24

e)(x-3)-(x+2)+2(x-1)-5=0

x -  3 - x - 2 + 2x - 2 - 5 = 0

2x = 12, x = 6

f)3x-2(4x-3)=2-3(x-1)

3x - 8x + 6 = 2 - 3x + 3

2x = 6 - 5 = 1

x = 1/2