Question

Resolva as equações de 1° grau

1). 2+5(-2x+8)=x-3
2). -4(3x+2)=2(-x+6)
3). 6+4(-3+x)=-2(-x-8)

Answer 1

1) 2 + 5(-2x + 8) = x - 3

2 - 10x + 40 = x - 3

- 10x + 42 = x - 3

10x + x = 42 + 3

11x = 45

x = 45/11

2) -4(3x+2) = 2(-x+6)

- 12x - 8 = -2x + 12

12x - 2x = - 8 - 12

10x = - 20

x = -20/10

x = -2

3) 6 + 4(-3+x) = -2(-x-8)

6 - 12 + 4x = 2x + 16

4x - 6 = 2x + 16

4x - 2x = 16 + 6

2x = 22

x = 22/2

x = 11