- PEMDAS
- When an expression with multiple terms is subtracted, the subtraction must occur across every term within the expression, each term in the subtracted part must have its sign reversed.
- Pretend that there are parentheses around the numerator and denominator of a fraction. This is easy to forget if you eliminate the fraction bar or add or subtract fractions.
Thursday, October 15, 2009
PEMDAS
Things one must know:
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