Question

ajudem por favor

Resolvam

A) 4 (x+1)=12

B) 5 (3-x) -4x=18

C) 9×-3 (2×+2)=15

D) 6 (3× +2)-8-2

Answer 1

A) 4 (x+1)=12

4x + 1 = 12
4x = 12 - 1
4x = 11
X = 11/4

B) 5 (3-x) -4x=18

15 - 3x - 4x = 18
-7x = 18 - 15
-7x = 3
X = 3/7

C) 9x -3 (x+2)=15

9x - 3x - 6 = 15
6x - 6 = 15
6x = 15 + 6
6x = 21
X = 21/6

D) 6 (3x +2)-8-2

18x + 12 - 8 - 2
18x + 12 - 10
18x + 2
18x = -2
X = -2/18