Question

Me ajudem resolver as equações a seguir por favor!?
A) 2 (x+2)=8
B) 8 (x+7)=104
C) 3 (x+4)+6=24
D) 3 (3x-4)-10x=5
E) 4x-2(x+3)=14
F) 3+2(3x-2)=4

Answer 1

A) 2 (x+2)=8
2x + 4 = 8
2x= 8 - 4
x = 4/2 ---> x= 2

B) 8 (x+7)=104
8x + 56 = 104
8x = 104 - 56
x = 48/8 ---> X=6

C) X = 2
D) X = -7
E) X = 10
F) X = 5/6

Answer 2

A) 2 (x+2) = 8                     
2x + 4 = 8
2x = 8 -4
2x = 4
x = 4/2
x = 2

B) 8(x+7) = 104
8x + 56 = 104
8x = 104 - 56
8x = 48
x = 48/8
x = 6

C) 3(x+4) + 6 = 24
3x + 12 + 6 = 24
3x = 24 - 12 - 6
3x = 6
x = 6/3
x = 2

D) 3(3x-4) - 10x = 5
9x - 12 - 10x = 5
9x - 10x = 5 + 12
-x = 17   .(-1)
x = - 17

E) 4x - 2(x+3) = 14
4x - 2x - 6 = 14
4x - 2x = 14 + 6
2x = 20
x = 20/2
x = 10

F) 3 + 2(3x - 2) = 4
3 + 6x - 4 = 4
6x = 4 + 4 - 3
6x = 5
x = 5/6