Answer:
x = 32
Step-by-step explanation:
3x + 32 + x + 20 =180
collect like terms:
4x + 32 + 20 = 180
4x + 52 = 180
Move constant to the right and switch its sign:
4x = 180 - 52
Subtract:
4x = 128
Divide both sides by 4:
