7 - 3x + 3 + 8x combining like terms

10+5x

Step-by-step explanation:

7 and 3 are like terms and 7+3=10

-3x and 8x are also like terms and - 3x+8x=5x

Therefore you have 10+5x

10-11x

Your welcome

Step-by-step explanation:

First, sort out the variables and the non-variables:

(7+3) - (8x+3x)

Then add the variables and the non-variables:

10-11x

Your Welcome

(I am 99.9% sure this is right)