Question

3-Resolva as equações abaixo :
A)3-2(x+3) = x-18
B)50+ (3x-4)= 2 (3x-4)+26
C)10x + 18 = 14x+8
D)2(x+3) =3(x-3)
E) 4 (5x-3)-64(3-x)-3(12x-4)=96.

Answer 1

Resposta:

A) 3 - 2*(x + 3) = x - 18

3 - 2x - 6 = x - 18

-2x - x = -18 + 6 - 3

-3x = -15

x = 5

B) 50 + (3x - 4) = 2(3x - 4) + 26

50 + 3x - 4 = 6x - 8 + 26

3x - 6x = - 8 + 26 - 50 + 4

-3x = - 28

x = 28/3

C) 10x + 16 = 14x + 8

10x - 14x = 8 - 16

-4x = -8 (*-1)

4x = 8

x = 8/4

x = 2

D) 2.(x - 3) = - 3.(x - 3)

2x - 6 = - 3x + 9

2x + 3x = 9 + 6

5x = 15

x = 15/5

x = 3

E) 4(5x-3) -64(3-x) -3(12x-4)=96

20x-12 -192+64x -36x + 12=96

20x+64x-36x=96+12+192-12

48x= 300-12

48x=288

x= 288/48

x=6

ESPERO TER AJUDADO!