Question

resolva as equações A) 5+6X=5X+2 B) X+2X-1-3=X C) -3X+10=2X+8+1 D) 5X-5+X=9+X E) 7X-4-X=-2X+8-3X

Answer 1

A) 5+6X=5X+2
6X-5X=2-5
X=-3

B) X+2X-1-3=X
X+2X-X=1+3
2X=4
X=4/2
X=2

C) -3X+10=2X+8+1
-3x-2x=8+1-10
-5X=-1
(-1).(-5X)=(-1).(-1)
5X=1
X=1/5

D) 5X-5+X=9+X
5X+X-X=9+5
5X=14
X=14/5

E) 7X-4-X=-2X+8-3X
7X-X+2X+3X=8+4
11X=12
X=12/11


Bons estudos!

Answer 2

Olá, boa tarde ☺

Resoluções:

a)

5 + 6x = 5x + 2.

6x - 5x = 2 - 5.

x= - 3.

b)

x + 2x - 1 - 3 = x.

x + 2x - x = 1 + 3.

2x=4.

x=4/2.

x=2.

c)

-3x + 10 = 2x + 8 + 1.

-3x - 2x = 8 + 1 - 10.

-5x=-1 .(-1)

5x=1.

x=1/5.

d)

5x - 5 + x = 9 + x.

5x + x - x = 9 + 5.

5x=14.

x=14/5.

e)

7x - 4 - x = -2x + 8 - 3x.

7x - x + 2x + 3x = 8 + 4.

11x=12.

x=12/11.

Bons estudos ✨