1/4 + 1/4 = 2/4 and... 2/4 is the same as 1/2 (one half)
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You need two equations to use the addition method.
Answer: When adding or subtracting fractions with different denominators it is important to change the denominators into the lowest common denominator by using equivalent fractions. Answer: Equivalent fractions are used to: * Simplify fractions. It is sort of inelegant to write the final solution of a problem as 123/246, when you can just as well write it as 1/2. * Add fractions. If two fractions have different denominators, you need to convert them to equivalent fractions that have the same denominator. Only then can you add. * Subtract fractions (same as addition). * Compare fractions, to check which one is larger (same as addition).
123-45-67+89??
x=1, y=1
24 is 3 x 8 If you have to use both numbers twice: 24 is sqrt(3 x 3 x 8 x 8)