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Glencoe Math: Course 2, Volume 2 View details

6. Solve Inequalities by Addition or Subtraction

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Exercise 39 Page 504

Use the Division Property of Equality to eliminate the multiplication.

Solution: x = - 2
Graph:

Practice makes perfect

To solve the equation, we have to isolate x on one side. Using the Division Property of Equality, we will divide both sides of the equation by - 2. This will eliminate the multiplication and isolate x.

- 2x = 4

DivEqn

.LHS /- 2.=.RHS /- 2.

- 2x/- 2 = 4/- 2

DivNegNeg

- a/- b=a/b

2x/2 = 4/- 2

MoveNegDenomToFrac

Put minus sign in front of fraction

2x/2 = - 4/2

CalcQuot

Calculate quotient