# How do you use cross products to solve #30/6=b/7#?

##### 2 Answers

Apr 11, 2018

#### Explanation:

eliminate the denominators so that you can get an idea as to what b will become

a faster way to do this is by seeing that

Apr 11, 2018

#### Explanation:

#"given equal fractions "a/b=c/d#

#"then "ad=bclarrcolor(blue)"cross product"#

#"using this method to solve the equation"#

#rArr6b=(30xx7)#

#rArrb=(30xx7)/6=35#