-16 + 4(2g - 18) = 0
Distribute 4 inside the parentheses.
-16 + (8g - 72) = 0
Combine like terms (-16 - 72).
-88 + 8g = 0
Add 88 to both sides.
8g = 88
Divide both sides by 8.

The obvious one is (310 beats)/(1 minute).
Answer:
the correct answer is x = 2