Question

Me ajudem pfv!!
1) Resolva as seguintes equações:

a) 7(x-2)=5(x+3)
b) 2(x-5)+4(x-1)=0
c) 3(2x-1)=-2(x+3)
d) 7(x-1)-2(x-5)=x-5
e) 6x=2x+16
f) 4x-10=2x+2

Answer 1

A)
7x - 14 = 5x + 15
7x - 5x = 15 + 14
2x = 29
x = 14,5

B)
2x - 10 + 4x - 4 = 0
6x -14 = 0
6x = 14
x = 14/6
x = 7/3

C)
6x - 3 = -2x - 6
6x + 2x = - 6 + 3
8x = -3
x = -8/3

D)
7x - 7 - 2x + 10 = x - 5
5x + 3 = x - 5
5x - x = - 5 - 3
4x = - 8
x = -2

E)
6x - 2x = 16
4x = 16
x = 4

F)
4x - 2x = 2 + 10
2x = 12
x = 6