Do you need to know what two numbers multiply to 21 and add to 78? In other words, do you need to find the two numbers whose product is 21 and sum is 78? No problem! The two numbers that multiply to 21 and add to 78 are as follows:
0.27017
77.72983
Here is the math to prove that our above answer to "What two numbers multiply to 21 and add to 78?" is correct:
Multiply:
0.27017 × 77.72983 ≈ 21
Add
0.27017 + 77.72983 = 78
The answers above are rounded if necessary. Therefore, if you double check that the answer above is correct by using a calculator, you may find it to be slightly off.
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