100 POINTS
I need help with 3 math questions please:
See picture:

(18) The value of x is 18.

(19) The value of x is 12.

(20) The value of x is -3.

Explanation:

(18) The equation is

To remove the fraction, we need to multiply both sides of the equation by .

Thus, we get,

Simplifying, we get,

Thus, the value of x is 18.

(19) The equation is

It is given that, first subtract 2 from both sides of the equation.

Simplifying,

Now, multiply both sides of the equation by , we get,

Simplifying, we have,

Thus, the value of x is 12.

(20) The equation is

It is given that, first add 3 to both sides of the equation.

Simplifying, we get,

Now, dividing both sides by -5, we get,

Simplifying, we get,

Thus, the value of x is -3.

Problem 18:  

Problem 19:  

Problem 20:  

Step-by-step explanation:

Problem 18

Step 1:  Find x

Problem 19

Step 2:  Find x

Problem 20

Step 3:  Find x

-2 is the right