-10y^2
Explanation: when combining like terms everything cancels out except for -10y^2
8 in x 10 in because you multiply each length by the Scale factor which is 2
Answer:
23/24
Step-by-step explanation:
Let's convert all the fractions to a common denominator
(-12/24 - 3/24) + (18/24 + 20/24)
Combine like terms and you get 23/24