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McGraw Hill Glencoe Algebra 2, 2012 View details

3. Solving Equations

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Exercise 10 Page 22

Use the Subtraction Property of Equality to eliminate the subtraction.

x=-6

Practice makes perfect

To solve the equation, we have to isolate x on one side. Using the Subtraction Property of Equality, we will subtract 13 from both sides. This will eliminate the sum and isolate x.

x+13=7

SubEqn

LHS-13=RHS-13

x+13 - 13=7 - 13

SubTerms

Subtract terms

x=-6

To check that this solution is correct, substitute x=-6 into the original equation and simplify.

x+13=7

Substitute

x= -6

-6+13? =7