A = Anthony's weight
B = Anthony's brother's weight
A = 2B + 9 Plug in Anthony's weight
59 = 2B + 9 Subtract 9 from both sides
50 = 2B DIvide both sides by B
25 = B Switch the sides to make it easier to read
B = 25
Anthony's brother weighs 25 pounds.
703.4 cmsquare
Hope it helps
Answer:
a) The GCF of 63 and 36 is 9
b)

Explanation:
a) To find the GCF of 63 and 36, we do the following:
Write 63 and 36 as follows:

The common factors are:

Therefore, the Greatest Common Factor (GCF) is 9
b) To find the factor 63 - 36