Answer:
A
Step-by-step explanation:
3x² + 6 - 2x + 5x - 4x² + 9
Combine like terms:
3x² - 4x² - 2x + 5x + 6 + 9
-x² + 3x + 15
X + 8 = 0.5
Take away 8 from both sides:
x = 0.5 - 8
x = -7.5
Answer: x = -7.5
Answer:
20 + d = 40
Step-by-step explanation:
It gives you 20 so you just say you want to add Donnie's age to equal 40. In math,
and/sum means add +
is means equals =
