Use inductive reasoning to find the next equation in the pattern.

Question

    8 - 5 + 3 = 2 x 3
  13 - 8 + 5 = 2 x 5
21 - 13 + 8 = 2 x 8
 

Answer 1

If the last step was

a-b+c = 2c

then the next step is

(a+b)-a+b = 2b