Equations Review

3c + 5 = 23

• c = 3
• c = 6
• c = 7
• c = 18

-4x+1=21

• x=120
• x=5
• x=30
• x=-5

8v - 4(v + 8) = 8

• 2
• 10
• 4
• -4 

3x + 2(4x - 4) = 3

• 4
• 3
• 2
• 1

 $r\left(r+7\right)=0$  

•  $r=0,\ r=-7$  

•  $r=0,\ r=7$  

•  $r=-7$  

•  $r=7$  

 $\left(u-2\right)\left(u+8\right)=0$  

•  $u=2,\ u=-8$  

•  $u=-2,\ u=8$  

•  $u=2,\ u=8$  

•  $u=-2,\ u=-8$  

 $\left(7f-3\right)\left(9f+1\right)=0$  

•  $f=\frac{3}{7},\ f=-\frac{1}{9}$  

•  $f=-\frac{3}{7},\ f=\frac{1}{9}$  

•  $f=\frac{3}{7,}\ f=\frac{1}{9}$  

•  $f=-\frac{3}{7},\ f=-\frac{1}{9}$  

Solve for t.
D= rt

• D/r = t
• Dr = t
• D/t = r
• Dt = r

Solve for a.

• a = pw
• a = p/w
• a = w/p
• a = w + p

Solve for x:

• x = yb - v
• x = by - v
• x = by + v