Brian McCall

Univ. of Wisconsin
J.D. Univ. of Wisconsin Law school

Brian was a geometry teacher through the Teach for America program and started the geometry program at his school

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Solving Two-step Equations - Problem 4

Brian McCall
Brian McCall

Univ. of Wisconsin
J.D. Univ. of Wisconsin Law school

Brian was a geometry teacher through the Teach for America program and started the geometry program at his school

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When you have solved for an equation almost all of the way but you're left with a negative sign in front of your variable, you can think of that as a negative one coefficient. Like, -x is the same thing as -1 times x. To "undo" that multiplying by negative one, you'd want to multiply everything by -1 so that you have just regular x all by itself. (Note- if you think of dividing by negative one, you'll get the same result- just do what makes more sense in your head.)

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