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2015-10-18T21:43:02+08:00

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-clear out any fractions by multipliying every term by the bottom parts.
-add or subtract the same value from both sides.
-divide every term by the same nonzero value.
-combine like terms.
-factoring.
-expanding (the opposite of factoring) may also help.
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2015-10-20T17:59:23+08:00

It depends like A9+B, the answer is 9AB. My teacher told us that 10 times.
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