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| Letters that represent numbers |
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| To make a rough calculation |
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| A group of mathmatical symbols that represent a number or quanity |
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| A mathmatical statement containing an equal sign |
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| like terms are terms containing the same variable |
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| A number that doesnt have a variable |
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| A number that multiplies a variable |
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| parentheses,eponents,multiply,divide,addition and subtraction |
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| In multiplication and addition, numbers can be multiplied or added in any order and the answer will be the same |
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| In addition and multiplication, numbers can be grouped in any order and the answer will be the same |
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multiply the number on the out side of the parentheses with the numbers on the inside of the parentheses, then add or subtract the numbers
EXAMPLE- 2(3+4) 2x3+2x4 |
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- Additive identity, +0
- Multiplicative, x by 1
*** answer will be the original number |
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- additive inverse, plus the opposite
EXAMPLE- -4+4
- multiplicative, multiply by the reciprocal 2/1x1/2 |
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