Answer:
see below
Step-by-step explanation:
3y = -9
Divide each side by 3
3y/3 = -9/3
y = -3
Step-by-step explanation:
peter is still in 1st grade he doesn't understand yet
Answer:
10x^2+3y
Step-by-step explanation:
Add together the x^2 and the y's, so your equation is (x^2+9x^2)+(7y-4y)=10x^2+3y.
(hope this helps :P)
