5.6 Using Multiplicative Inverse to Solve Equations.notebook
December 14, 2015
5.6 Using Multiplicative Inverses to Solve Equations Essential Skill:
Explicitly assess information and draw conclusions
Multiplicative Inverse Property
Any number times its reciprocal ("flip it") is 1.
3
5
5 = 1
3
5.6 Using Multiplicative Inverse to Solve Equations.notebook
Solve.
1
3
1) x = 15 2) x = 4
2
5
3) 6x = 18
11
­7
7
4) y =
13
9
December 14, 2015
5.6 Using Multiplicative Inverse to Solve Equations.notebook
Now for two­step equations! Solve.
2
1) x + 2 = 12
3
2 1
2
2) x + = 5
5
5
1
3
7 3) y + = 4
2
12
Steps:
1. Get whole numbers/fractions to one side by adding or subtracting 2. Clear the coefficient (number in front of the variable) by
multiplying by the reciprocal (multiplicative inverse)
December 14, 2015
5.6 Using Multiplicative Inverse to Solve Equations.notebook
December 14, 2015