The LCD is the least common denominator, or the smallest value that is divisible by both 12 and 8. In this case the LCD is 24 because it is the smallest number that 8 and 12 goes into.
4+4+4+4+4+4+4+4=32 because you need to do 4 8 times to get 32. This is also called repeated addition
4k+44 = 10 k -10
-4k -4k
44 = 6k-10
+10 +10
54=6k
54/6 = 6k/6
9=k hope this helps
Answer: 63
Step By Step: Put 84 over a 1 to make this easier. One in the format, multiply 84/1 by 3/4. You should get 252/4. One you simply this you should get 63.
