1. Equations with addition
• x + 5 = 24
– We need to get rid of +5 by subtracting 5
– Do the same thing to both sides.
• x + 5 = 24 24 – 5?
-5=-5
• x = 19

2. Equations with subtraction
• y – 15 = 20
– We need to get rid of -15 by doing the opposite
– Add 15 to both sides
• y -15 = 20 20 + 15?
+15= +15
x = 35

3. Equations with multiplication
5x = 20 When the 5 and x are next to
each other it means to multiply
– We need to get rid of 5x by doing the opposite of
multiplying by 5… we need to divide by 5
• 5x = 20 20 divided by 5?
5 5
x=4

4. Equations with division
x This is saying x divided by 5… We
25 need to get rid of that by doing the
5 opposite… multiplying by 5
x5 x5
x = 125

5. Multiple Step Equations
10x + 12 = 62 Subtract 12 from both
-12 = -12 sides
10x = 50 No divide both sides by 10
10 10
X=5