Solve equations using multiplication and division 1 Solve

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Solve equations using multiplication and division.

Solve equations using multiplication and division.

1) Solve. -5 t = 60 To get the variable by itself, which number

1) Solve. -5 t = 60 To get the variable by itself, which number needs to be moved? -5 To move the -5, you have to do the opposite operation. What operation will we use? division

1. 2. 3. 4. 1) Solve -5 t = 60 -5 -5 Draw “the

1. 2. 3. 4. 1) Solve -5 t = 60 -5 -5 Draw “the river” to t = -12 separate the equation into 2 sides Divide both sides by -5 Simplify Check your answer -5(-12) = 60

1. 2. 3. 4. 2) Solve 15 = 6 n 6 6 Draw “the

1. 2. 3. 4. 2) Solve 15 = 6 n 6 6 Draw “the river” Divide both sides by 6 2. 5 = n Simplify Check your answer 15 = 6(2. 5)

3) Solve -3 v = -129 1. 2. 3. 4. v = -126 v

3) Solve -3 v = -129 1. 2. 3. 4. v = -126 v = -43 v = 126 Answer Now

4) Solve You don’t like fractions? Let’s get rid of them! “Clear the fraction”

4) Solve You don’t like fractions? Let’s get rid of them! “Clear the fraction” by multiplying both sides of the equation by the denominator.

4) Solve 1. Draw “the river” 2. Clear the fraction – multiply both sides

4) Solve 1. Draw “the river” 2. Clear the fraction – multiply both sides by 4 3. Simplify 4. Check your answer 4· x = -48 · 4

5) Solve 1. 2. Draw “the river” Clear the fraction – multiply both sides

5) Solve 1. 2. Draw “the river” Clear the fraction – multiply both sides by 3 3. 4. Simplify Divide both sides by 2 5. Simplify 6. Check your answer 3· = 18 · 3 2 x = 54 2 2 x = 27

6) Which step clears the fraction in 1. 2. 3. 4. Multiply by 3

6) Which step clears the fraction in 1. 2. 3. 4. Multiply by 3 Multiply by 5 Multiply by -12 Multiply by -5 Answer Now

7) Solve 1. 2. 3. 4. b = -56 b = -14 b =

7) Solve 1. 2. 3. 4. b = -56 b = -14 b = 56 Answer Now

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