17
-25 + -42 = -67
42?
42 + 42 = 84
x/2 = 21 x = 42
42 + 25 + 8 = 75
25 + 17 = 42
42 and 42
25+16+12+42+20=115
28 + 42 = 70
It is: 38+4 = 42
50/42 = 25/21
I'll help you out, but u can just use a calculator you know... Fine... (25-17)=8 + (42-30)=12 8 + 12 = 20... There you go.