Question

1- RESOLVA AS EQUAÇÕES E INEQUAÇÕES:
A) 4(x+3)=2(x-1)
B) 2+5(3x+1)=0
C) 3(x+1)>3
D) 4x-4<3x+7
E) 9x>7x+18


Me ajudem pfv ;-;

Answer 1

A) 4(x+3)=2(x-1)

4x+12= 2x-2

4x-2x=-12-2

2x=-14

x=-14/2

|x=-7|

B) 2+5(3x+1)=0

6x+2+15x+5=0

6x+15x=0-5-2

21x=-7

x=-7/21(÷simplificando p/7)

|x=-1/7|

C) 3(x+1)>3

3x+3>3

3x>3-3

|3x>0|

D) 4x-4<3x+7

4x-3x<7+4

|x<11|

E) 9x>7x+18

9x-7x>18

2x>18

x>18/2

|x=9|