Question

Resolva as seguintes equações do 1° grau :

A) 10x+16=14+8x

B) 2x-6=-3x+9

C) 4(5x-3)=6(3-x)

D) 5(x+1)=9(x+3)

Answer 1

A)
10x+16=14+8x
10x-8x=14-16
2x=-2
x=-2/2
x=-1
Resposta:  -1 
B)
2x-6=-3x+9
2x+3x=9+6
5x=15
x=15/5
x=3
Resposta:  3
C)
4(5x-3)=6(3-x)
20x-12=18-6x
20x+6x=18+12
26x=30
x=30/26
x=15/13
Resposta: 15/13
D)
5(x+1)=9(x+3)
5x+5=9x+27)
5x-9x=27-5
-4x=22
x=22/-4
x=11/-2
Resposta: -11/2