Question

timmy has 180 marbles, some plain and some colored. if there are 32 plain more marbles than colored, how many colored marbles does he have?

Answer 1

180=x+x+32 180 is equal to x(amount of colored marbles) plus x+32 (amount of plain marbles)
180=2x+32
-32+180=2x
148/2=x
74=x

74 colored marbles and 106 plain

Answer 2

74   (180 - 32) / 2 because if there are 32 more than the other part, it is n + (n+32)