MATH
posted by @@@KEA .
mike car traveled 237 miles on 7 9/10 gallons of gas, how many miles per gallon did he achieve? i multiply 7 by 10 and add 9 which my equation 237/1 x 79/10 and then got stuck, please help

You need to divide 237 by 7 9/10.
Unless your directions insist you figure this out with fractions, the easiest way is by using a decimal.
237 / 7.9 = 30 miles per gallon