Question

Resolva as 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

ME AJUDEI PFVR

Answer 1

A) 7(x - 2)=5(x + 3)
7x - 14 = 5x + 15
7x - 5x = 15 + 14
2x = 29
x = 29/2
x = 14,5

B) 2(x - 5)+4(x - 1)=0
2x - 10 + 4x - 4 = 0
2x + 4x = 0 + 10 + 4
6x = 14
x = 14/6 (Simplifica por 2.)
x = 7/3



C) 3(2X-1)= -2(X+3)
7x - 3 = - 2x - 6
7x + 2x = -6 + 3
9x = - 3
x = -3/9


D) 7(x - 1) - 2(x - 5)=x - 5
7x - 7 - 2x + 10 = x - 5
7x - 2x - x = - 5 + 7 - 10
5x - x = 2 - 10
4x = - 8
x = - 8/4
x = - 2