Just multiply the two denominators of your fractions, the answer you get is a common denominator.
You Ned to find a larger common denominator or multiply the denominators to gain a common denominator.
You DO need a common denominator to add, subtract, or compare fractions. You DO NOT need a common denominator to multiply or divide fractions.
It helps to find a common denominator and multiply both sides of the inequality by this common denominator. That way, you have an inequality without fractions.
yes. you multiply the numerator and denominator
multiply denominator by denominator and vice versa
multiply the two denominators
Yes you do.