Yes, you do so that when you subtract, you subtract each number for their specific place value.
Hope this helps :)
Answer:
6
Step-by-step explanation:
9-3=6
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)
Answer:
4132
Step-by-step explanation:
