Answer:
x = 7/3 or x = 2.3
Step-by-step explanation:
x + 12 = 4x + 5
x-4x+12=5
-3x=5-12
3x=-7
x=7/3 or you can simplify it to x=2 1/3 or 2.3
x=8
x+12=20
x=20-12
