# Algebra II - Algebra II By Monica Yuskaitis Definitions...

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Algebra II By Monica Yuskaitis

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Definitions Equation – A mathematical sentence stating that 2 expressions are equal. 12 – 3 = 9 8 + 4 = 12
Definitions Equation – A mathematical sentence with an equals sign. 16 – 5 = 11 14 + 3 = 17

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Definitions Equals Sign (=) Means that the amount is the same on both sides. 4 + 2 = 6 5 – 2 = 3
An Equation is like a balance scale. Everything must be equal on both sides. 10 5 + 5 =

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When the amounts are equal on both sides it is a true equation. 12 6 + 6 =
When the amounts are unequal on both sides it is a false equation. 8 2 + 2 =

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When an amount is unknown on one side of the equation it is an open equation. 7 n + 2 =
When you find a number for n you change the open equation to a true equation. You solve the equation. 7 n + 2 = 5

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Are these equations true, false or open? 11 - 3 = 5 13 + 4 = 17 N + 4 = 7 12 – 3 = 8 3 + v = 13 15 – 6 = 9 false true open false open true
Inverse operation – the opposite operation used to undo the first. 4 + 3 = 7

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Algebra II - Algebra II By Monica Yuskaitis Definitions...

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