Answer:
20
Step-by-step explanation:
to begin with, we have to add 12x+9y+-2y we add like terms(y and y)
12x+7y
next, we have to subtract 4x-3y from 12x+9y
(12x+9y)-(4x-3y)
our answer is: 8x+12y
224
Answer:96
5/12
Pretty sure its SAS similarity theorem
