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)

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

24

step-by-step explanation:

if it takes 8 pounds to make 12 divide 12 by 8 and you get 1.5, 1.5 x 16 = 24