Multiply the bracket by 3
3(x-2)= 12
3(x)-3(2)=12
3x-6= 12
Move -6 to the other side. Sign changes from - 6 to +6 .
3x-6+6= 12+6
3x= 18
Divide by 3 for 3x and 18
3x/3= 18/3
x= 6
Check answer by using substitution method
3(x-2)= 12
3(6-2)= 12 ( Multiply the bracket by 3)
18-6= 12
12= 12
Answer : x= 6
