SOLVING EQUATIONS (1.3)

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EQUATION - MATHEMATICAL SENTENCE STATING TWO MATHEMATICAL STATEMENTS ARE EQUAL

SOLUTION - A REPLACEMENT VALUE THAT MAKES AN OPEN SENTENCE TRUE

LITERAL EQUATION - AN EQUATION WITH >1 VARIABLE

EX:

7x + 3 = 2x - 12

- 3 - 3

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7x = 2x - 15

- 2x -2x

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5x = -15

x 1/5 x 1/5

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x = -3 (sometimes true)