what would be the answer to 7(2L+4)=140 ???
7(2L + 4) = 140
distribute the 7 into the numbers in the parentheses
7(2L) + 7(4) = 140
then subtract 28 on both sides
14L + 28 = 140
-28 -28
14L = 112
then divide both side by 14
14L/14 = 112/14
L = 8
+193 
