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take 1/2 anad x/17. you would times the #s that are diagnol then divide by the # left.

1 x

_ _

2 17 1x17=17

17/2=8.5

so x=8.5

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Q: When you multiply fractions how do you cross multiply?
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Related questions

What is the difference between cross and across?

When you add or subtract fractions you cross multiply and when you multiply or divide fractions you across multiply.


When do you cross multiply to solve an equation?

When doing fractions, you may cross multiply.


Do you cross multiply with fractions?

yes


Is it necessary to cross multiply when multiplying fractions?

No.


Do you still cross multiply when you have like fractions?

You do not need to.


How do you figure out if two fractions are equal or not?

cross multiply


What is a definition for ordering fractions?

to order fractions you can cross multiply two fractions at a time or you can convert all the fractions into decimals.


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 figure out what fractions are greater?

Change the fractions to the same denominator then compare.A quick way is to multiply UP on cross multiply and compare.


How do you multiply fractions by cross canceling?

6/7 of 217


How do you you cross multiply?

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


What does Cross multiplication mean?

Cross multiplication is when you multiply the denominator of a fraction by the numerator of another fraction. Before you cross multiply you want to see if you can simply the fractions.