Solve Fraction Equations

1
Solve Fraction Equations
.
EQ How do we solve equations of fractions using
multiplication and division
Designed by Skip Tyler, Varina High School
2
1) Solve. -5t 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

3
1) Solve -5t 60
-5 -5 t -12 -5(-12) 60

1. Draw the river to separate the equation into 2
   sides
2. Divide both sides by -5
3. Simplify
4. Check your answer

4
2) Solve 15 6n
6 6 2.5 n 15 6(2.5)

1. Draw the river
2. Divide both sides by 6
3. Simplify
4. Check your answer

5
3) Solve -3v -129

1. v -126
2. v -43
3. v 43
4. v 126

6
4) Solve

• You dont like fractions? Lets get rid of them!
  ?
• Clear the fraction
• by multiplying both sides of the equation by the
  denominator.

7
4) Solve

1. Draw the river
2. Clear the fraction multiply both sides by 4
3. Simplify
4. Check your answer

4 4 x -48
8
5) Solve 18
3 18 3 2x 54 2
2 x 27

1. Draw the river
2. Clear the fraction multiply both sides by 3
3. Simplify
4. Divide both sides by 2
5. Simplify
6. Check your answer

9
6) Which step clears the fraction in

1. Multiply by 3
2. Multiply by 5
3. Multiply by -12
4. Multiply by -5

10
7) Solve

1. b -56
2. b -14
3. b 14
4. b 56