One-Step Equations with Negatives

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What is a one-step equation?

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A one-step equation is an algebraic equation that can be solved in a single step, typically by performing the inverse operation to isolate the variable.

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What does it mean to isolate a variable in an equation?

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Isolating a variable means rearranging the equation so that the variable is on one side and all other terms are on the other side.

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Solve for a: 19 + a = -50

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a = -69

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Solve for p: p - 18 = 3

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p = 21

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Solve for x: x - 3 = -10

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x = -7

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Solve for n: n - 6 = -15

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n = -9

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Solve for a: a - 1 = -17

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a = -16

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What is the inverse operation of addition?

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The inverse operation of addition is subtraction.

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What is the inverse operation of subtraction?

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The inverse operation of subtraction is addition.

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How do you check if your solution to an equation is correct?

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You can check your solution by substituting the value back into the original equation to see if both sides are equal.