# Multiplication and Division Equations SWBAT solve multiplication equations using the division property of equality; solve division equations using the.

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Multiplication and Division Equations SWBAT solve multiplication equations using the division property of equality; solve division equations using the multiplication property of equality

Related Operations  How are addition and subtraction related? –They undo each other, or are inverse operations  How are multiplication and division related? –They undo each other, or are inverse operations

Definitions  Addition property of equality –When you add the same number to both sides of an equation, you get a true statement  Subtraction property of equality –When you subtract the same number to both sides of an equation, you get a true statement  Multiplication property of equality –When you multiply the same number to both sides of an equation, you get a true statement  Division property of equality –When you divide the same number to both sides of an equation, you get a true statement

Write the following as an equation, using y as your variable.  An object on Jupiter weights about 2.6 times its weight on Earth. If a spacecraft weighs 4914 Newtons on Jupiter, what is its weight on Earth?  2.6y = 4914  How can you determine how much it weighs on earth? –Divide to get the variable by itself

Examples  38x = 760  1.7c = 25.5  _b_ = 120 15 15  z ÷ 13 = 650  _x_ = 192 14 14  8b = 0.2416

Try the problems on your paper  b = 0.0302  d = 138  d = 164.52  n = 0.25  n = 2.5  f = 147.18

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