Question

resolva as equações.
a) 5x-16=3x-12
B) 3(x+1)=4(x-5)
C)(6x+7)-5=(12+2x)-4x-6)

Answer 1

Resposta:

a) 2

b) 23

c)1/2

Explicação passo a passo:

A) 5x-16=3x-12

5x-3x= -12+16

2x= 4

x= 4/2

x=2

b) 3( x+1)= 4(x-5)

3x+3= 4x-20

3x-4x= - 20-3

-x= - 23 (*-1)

x= 23

c) (6x+7)-5= (12+2x)-4x-6

6x+7-5= 12+2x-4x-6

6x+2= 6 -2x

6x+2x= 6 -2

8x= 4

x=4/8

simplifica

x=1/2