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Envision Math 2.0: Grade 6, Volume 1

EM

Envision Math 2.0: Grade 6, Volume 1 View details

5. Write and Solve Equations with Rational Numbers

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Exercise 9 Page 205

Use the Multiplication Property of Equality to eliminate the division.

r = 100.1

Practice makes perfect

To solve the equation, we have to isolate r on one side. Let's use the Multiplication Property of Equality and multiply both sides of the equation by 5.5. This will eliminate the denominator of the fraction and isolate r.

r ÷ 5.5=18.2

a÷ b=a/b

r/5.5 = 18.2

LHS * 5.5=RHS* 5.5

r/5.5 * 5.5 = 18.2 * 5.5

FracMultDenomToNumber

a/5.5* 5.5 = a

r = 18.2 * 5.5

Multiply

r = 100.1

Subchapter links

Do You Understand? p.205

Do You Know How? p.205

Assessment Practice p.208