0
if youre dealing with fractions then you multiply top by top and bottom by bottom then simplify
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
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.
When you multiply fraction do you cross multiply?
No you only cross multiply when your working with percent
When do you cross multiply to solve an equation?
When doing fractions, you may cross multiply.
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.
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.
Do you cross multiply with fractions?
yes
What is it called when you multiply the numerator of one fraction by the the denominator of another?
cross multiply
Is it necessary to cross multiply when multiplying fractions?
No.
How you change decimal to fraction?
cross multiply
How do you cross multiply in algebra in high school?
no
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.
Do you still cross multiply when you have like fractions?
You do not need to.
Multiplicative inverse is the definition of what word?
cross multiply
