100=25+75, rewrite 25+75 using their GCF and multiplication.
2 answers
25 x 4 + 75 x 4 = 100
What?
25 * 4 = 25 * 1 + 25 * 3
by the way 75 * 4 = 300
25 * 4 = 25 * 1 + 25 * 3
by the way 75 * 4 = 300