Solving Equations When you solve an equation, you always DO THE SAME THING to both sides of the equation y + (-4) = Wait for the BB message before taking notes!

First you look to see what is “happening” to the variable Then you use inverse operations to get the variable by itself

Multiplication Equations 3y = 9 What is happening to the variable? It’s being multiplied by 3 How do you “undo” multiplying by 3? Divide BOTH SIDES of the equation by 3

Solving using proper steps 3y = 9 3 Since y times 3 divided by 3 is just y… y = 3

Try these… -6m = 36 5n = -20 check your solution… divide both sides by -6 divide both sides by 5 -6(-6) = 36? yep! 5(-4) = -20? yep! m = -6 n = -4

Division Equations What is happening to the variable? It’s being divided by 4 How do you “undo” dividing by 4? Multiply BOTH SIDES of the equation by 4

Use steps… Since k divided by 4 times 4 is just k…

Try these… check your solution… multiply both sides by 6 multiply both sides by - 3

Burrito Books! To solve an equation like this: divideboth sides of the equationby 5

Burrito Books! To solve an equation like this: multiplyboth sides of the equationby 4

Why don’t we do this?:  4 ÷ 5

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