Answer:
(1) 
(2) 
(3) 
(4) 
(5) 
(6) 
(7) 
(8) 
(9) 
(10) 
Step-by-step explanation:
One thing that will be very useful in solving these problems is the distributive property, that states
.
(1) Use the distributive property to open the parentheses, getting:

Then, combine like terms and isolate
on one side to get:

Divide both sides by -9 to get:

(2) Combine like terms and isolate
on one side to get:

Divide both sides by -8 to get:

(3) Use the distributive property to open the parentheses, getting:

Combine like terms and isolate
on one side to get:

Divide both sides by 21 to get:

(4) Use the distributive property to open the parentheses, getting:

Combine like terms and isolate
on one side to get:

Divide both sides by -11 to get:

(5) Combine like terms and isolate
on one side to get:

Divide both sides by -4 to get:

(6) Combine like terms and isolate
on one side to get:

Divide both sides by -8 to get:

(7) Use the distributive property to open the parentheses, getting:

Combine like terms and isolate
on one side to get:

Divide both sides by -10 to get:

(8) Use the distributive property to open the parentheses, getting:

Combine like terms and isolate
on one side to get:

Divide both sides by 15 to get:

(9) Simplify the left side of the equation to get:

Add 3 to both sides to arrive at:

(10) Use the distributive property to open the parentheses, getting:

Combine like terms and isolate
on one side to get:

Divide both sides by 6 to get:

Hope this helps :)
P.S. These problems took 1 hour for me to solve and type the solutions. <u>Please give Brainliest if this answer helped you</u> :)