3(x − 1) − 2x = 9 x = 5d + 4(3 − d) = 36 d = 98 − 9y + 10(3 + y) = 213 y = −58 + 2(h − 29) − h = 41 h = −67c + 4(17c + 1) = 768 c =

1) Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation.

(3 • (x - 1) -  2x) -  9  = 0

Solve   x-12 = 0

Add  12  to both sides of the equation

x = 12

2)Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation  

(5d +  4 • (3 - d)) -  36  = 0  

Solving a Single Variable Equation

d - 24  = 0  

Add  24  to both sides of the equation

d = 24

3) ((98 - 9y) +  10 • (y + 3)) -  213  = 0

y - 85  = 0

Solve  :    y-85 = 0

Add  85  to both sides of the equation :  

y = 85

4)(-67c +  4 • (17c + 1)) -  768  = 0

c - 764  = 0

Solve  :    c-764 = 0

Add  764  to both sides of the equation :  

c = 764

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !