100 because they form a supplementary angle which means they add to 180
12a−a
=12a−1a
=12a+−1a
=a+a+a+a+a+a+a+a+a+a+a+a+−a
=a+a+a+a+a+a+a+a+a+a+a
=11a
Tom has to grow 20% in order to become 48 inches tall.
4/12 equals 2/6 which is smaller than 4/6 so the correct answer is 4/12 <4/6
