Question

QUESTÃO 01: Resolva as equações abaixo:

A) 5.(2x+7)-1=4.(x-5)+9
B) 2.(x-1)+3.(x+1)=4.(x+2)
C) 2.(x+1)+5(x-1)=7
D) 2.(2x+3)+5.(x+1)=8-3(x-1) ​

Answer 1

Resposta passo a passo:

A) 5.(2x+7)-1=4.(x-5)+9

5.2x+5.7-1=4.x-4.5+9

10x+35-1=4x-20+9

10x+34=4x-11

10x-4x=-11-34

6x=-45

x=-45/6

x=-7,5

B) 2.(x-1)+3.(x+1)=4.(x+2)

2.x-2.1+3.x+3.1=4.x+4.2

2x-2+3x+3=4x+8

5x-2+3=4x+8

5x+1=4x+8

5x-4x=8-1

x=7

C) 2.(x+1)+5(x-1)=7

2.x+2.1+5.x-5.1=7

2x+2+5x-5=7

2x+5x=7-2+5

7x=5+5

7x=10

x=10/7

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

2.2x+2.3+5.x+5.1=8-3.x-3.(-1)

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

9x+6+5=8-3x+3

9x+11=-3x+11

9x+3x=11-11

12x=0

x=0/12

x=0