add and solve this fraction: 3b^3t^3/8d^2k^2 + 5y^2/2bk^2

[sheilaleguire]

3b^3t^3 / 8d^2k^2 + 5y^2/2bk^2

[stapel_eliz]

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 8d²k² and 2bk², 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 8bd²k².

So multiply the first fraction, top and bottom, by b; multiply the second, top and bottom, by 4d².

Then add the numerators, and simplify if possible.