Need help with my school

I'm not sure if this is right but I think it should be x= 15

21

Step-by-step explanation:

Put them equal to eachother

(10x-29)=(8x+3)

2x=42

x=21

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100