Jika 3x +12 = 7x – 8, tentukan x +2
3x + 12 =7x – 8
3x – 7x =-8 – 12
-4x = – 20
x= 5
x + 2 = 5 + 2
= 7
3x + 12 = 7x -8
3x-7x = -8-12
-4x = -20
x = -20/-4
x = 5
dimasukan kedalam x+2 = 5+2 = 7
Jika 3x +12 = 7x – 8, tentukan x +2
3x + 12 =7x – 8
3x – 7x =-8 – 12
-4x = – 20
x= 5
x + 2 = 5 + 2
= 7
3x + 12 = 7x -8
3x-7x = -8-12
-4x = -20
x = -20/-4
x = 5
dimasukan kedalam x+2 = 5+2 = 7