Educator

Solving Addition Equations

• The objective in solving equations is to isolate the variable, to get it alone.
• Inverse operations are operations that undo each other. Addition is the inverse operation of Subtraction. Multiplication is the opposite operation of Division.
• The Subtraction Property of Equality says that if you subtract the same value from each side of an equation, the two sides remain equal.
• You can use subtraction of an equation to undo addition. This will isolate the variable and show you its value. For example: x + 4 = 9. Subtract 4 from both sides and that will undo the addition next to the variable x. You will then have x = 5.