sheilaleguire wrote:3b^3t^3 / 8d^2k^2 + 5y^2/2bk^2
The first step will be to convert the fractions to a common denominator.
Since the two denominators are 8d
^{2}k
^{2} and 2bk
^{2}, the
least (smallest) common denominator will be:
8d^2k^2: 2 * 2 * 2 * d * d * k * k
2bk^2: 2 * b * k * k
--------------------------------------
LCM: 2 * 2 * 2 * b * d * d * k * k
...or 8bd
^{2}k
^{2}.
So multiply the first fraction, top and bottom, by b; multiply the second, top and bottom, by 4d
^{2}.
Then add the numerators, and simplify if possible.