Question

a)4x-1=3(X-1)
B)3(x-2)=2x-4
c)2(x-1)=3x+4
d)3(x-1)-7=15
e)7(x-4)=2x-3
f)3(x-2)=4(3-x)
g)3(3x-1)=2(3x+2)
h)7(x-2)=5(x+3)

Resolva as equações

Answer 1

Explicação passo-a-passo:

a) 4x - 1 = 3(x - 1)

4x - 1 = 3x - 3

4x - 3x = -3 + 1

x = -2

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

3x - 6 = 2x - 4

3x - 2x = -4 + 6

x = 2

c) 2(x - 1) = 3x + 4

2x - 2 = 3x + 4

2x - 3x = 4 + 2

-x = 6

x = -6

d) 3(x - 1) - 7 = 15

3x - 3 - 7 = 15

3x = 15 + 3 + 7

3x = 25

x = 25/3

e) 7(x - 4) = 2x - 3

7x - 28 = 2x - 3

7x - 2x = -3 + 28

5x = 25

x = 25 ÷ 5

x = 5

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

3x - 6 = 12 - 4x

3x + 4x = 12 + 6

7x = 18

x = 18/7

g) 3(3x - 1) = 2(3x + 2)

9x - 3 = 6x + 4

9x - 6x = 4 + 3

3x = 7

x = 7/3

h) 7(x - 2) = 5(x + 3)

7x - 14 = 5x + 15

7x - 5x = 15 + 14

2x = 29

x = 29/2