Question

Please class can you help me to simplify in the lowest terms 4x/7-x/21

Answer 1

Explanation:

4x/7 - x/21

You have to change the first term 4x/7 to a common denominator of 21.

4x/7 = 12x/21

(21 divided by 7 is 3 and then 3 times four is 12.)

then subtract: 12x/21 - x/21 = 11x/21