Question

help me solve for 9 and 10 please

Answer 1

Answer:

8x-10=x+11

8x-x=11+10

7x=21

x=21/3

x=3

for question 9

5x-7=7x-17

5x-7x=_17+7

-2x=-10

x=-10/-2

x=5

Answer 2

9.
8x-10=x+11
subtract x and add 10 to both sides so that all the x’s are on one side and the numbers on the other
7x=21
Divide both sides by 7 to isolate x
x=3

10.
5x-7=7x-17
Do the same thing as above subtract the 7x and add 7
-2x=-10
divide by -2
x=5