tentukan nilai x dari: a. 2(x-2)=12 b. 3(5-x)=x+1 tolong ya kak d jawab

a.
2(x - 2) = 12
2x - 4 = 12
2x = 12 + 4
2x = 16
x = 8

b.
3(5 - x) = x + 1
15 - 3x = x + 1
- 3x = x + 1 - 15
- 3x = x - 14
- 3x - x = - 14
- 4x = - 14
x = - 14/4
x = - 7/2
x = - 3,5

Maaf Kalau Salah

A. 2(x-2) :12
2x-4 :12
2x : 12+4
2x : 16
x : 16/2
x : 8
B. 3(5-x) : x+1
15-3x : x+1
-3x -x : 1-15
4x : 14
x : 14/4
x : 7/2 atau 3 1/2