2-5 Solving One-Step Equations

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created 10 years ago by mpatterson
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updated 10 years ago by mpatterson
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8th grade
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2-5 Solving Equations by Adding or Subtracting

-Isolate the variable
-Do inverse (oppositie) operations to move numbers away from the variable
-What you do to one side of the equation, you must do to the other side of the equation

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2

a + 7 = -12
a + 7 - 7 = 12 - 7
a = 5

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3

b - 5 = 14
b - 5 + 5 = 14 + 5
b = 19

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4

g - (-9) = 15
g - (-9) + (-9) = 15 + (-9)
g = 6

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