I believe the answer is 9.
Answer:
3m² + 2mn + 7n²
Step-by-step explanation:
Subtract m² + 3mn - n² from 4m² + 5mn + 6n², that is
4m² + 5mn + 6n² - (m² + 3mn - n²)
= 4m² + 5mn + 6n² - m² - 3mn + n² ← collect like terms
= 3m² + 2mn + 7n²
Answer: SSS
Step-by-step explanation:
w = -4
6w + 2 = 9w + 14
Combine like variables by subtracting 9w and 2 from both sides
6w ( - 9w) + 2 ( - 2) = 9w ( - 9w) + 14 ( - 2)
-3w = 12
Divide both sides by negative 3 to separate the variable from any integers
(-3w = 12) / -3
w = -4