How do you solve #7x/8-3x/5=11/2#?
In order to add or subtract fractions, they must have the same denominator, which is the least common denominator (LCD). To find the LCD, list the multiples of each denominator and find the lowest multiple they have in common.
The LCD is
Multiply each fraction by an equivalent fraction that will give both fractions the same denominator. An
Multiply both sides by
Divide both sides by
I will treat the fractions as mixed numbers of the form
Convert the mixed numbers to improper fractions.
To subtract fractions, find a common denominator.
multiply both sides by 40