84 + 46 + 94 - 66 + 75 + 72 - 58 + 21 =equal what??
1 answer:
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Step-by-step explanation:
Multiplication of fractions is easiest operation. Simply multiple numerator to numerator and denominator to denominator. For example,
Addition and subtraction requires that we find a common demoninator.
For example,
The common denominator is 12. So I need to muliply each fraction to get the right denominator. 4*3 = 12.
Then we add the numerators
Then we should reduce.
Division is a little trickier because we have to flip-flop the second term and then multiply. For example:
Answer:
Step-by-step explanation:
We remove the bracket and rearrange the numbers to add them. Only similar variables can be added together.