144
144
35
144
144
63 plus 47 plus 42 plus 21 is equal to 173.
9 plus 7 equals 144. Generally, x plus y = x(x+y).
144
144 add the two numbers and multiply by the first 2(2 + 3) = 10 7(7 + 2) = 63 etc.
96
26
144 This works if you first add the two digits (ex. 2+3=5), then multiply the first digit by the answer you got (2+5=10).
If I am correct, 9 plus 7 equals 112.