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Subjects>Math>Algebra

How do you you cross multiply?

MadiSnyder ∙

Lvl 1

∙ 13y ago

Updated: 4/28/2022

if youre dealing with fractions then you multiply top by top and bottom by bottom then simplify

Wiki User

∙ 13y ago

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Continue Learning about Algebra

When do you cross multiply to solve an equation?

When doing fractions, you may cross multiply.

When do you cross multiply in dividing fractions?

To divide fractions, turn the second one over - that is, swap its numerator and denominator - and multiply. Nothing else is necessary. You cross multiply when you have a proportion, that is when you have two ratios that are equal.

How do you describe a vector as an ordered pair?

Use SOHCAHTOA, then cross multiply and divide.

How do you solve a scale factor problem?

cross multiplacation. put the 3 numbers into fractions and than multiply the 2 diagnol numbers then divide by the third.

Multiply mixed numbers?

First, change the mixed numbers into improper fractions. Like, 3 and 1/2 would be 7/2. Then, multiply it with another improper fraction. We'll say 5/4. So to get the new numerator you would go 5*7=35. Then, for the denominator, you would go 2*4=8. So your answer would be 35/8, or 4 and 3/8.

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