k+4 K+9
-------- = --------
2 3
Step 1 : multiply each side by a number to get a common denominator
3 * k+4 K+9 *3
-------- = --------
3* 2 3 *3
Step 2: you cancel the denominator because their the same
3k+12 2K+18
-------- = --------
Step 3: start to subtract, add , divide, or multiply to both sides to cancel out terms to get x by its self and to equal to a number
3k + 12 = 2k +18
-2k -2k
k + 12 = 18
k = 6
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