Question

Number 21 is what I need help on

Answer 1

Answer: −50x−66

Explanation:

4(10x+6)−10(9x+9)

Distribute:

=(4)(10x)+(4)(6)+(−10)(9x)+(−10)(9)

=40x+24+−90x+−90

Combine Like Terms:

=40x+24+−90x+−90

=(40x+−90x)+(24+−90)

=−50x+−66