30
30 is the answer
20 - 10 = 10
10 - 20 = -10
Half of 20 is 10. If you add 10 and 10, you will see that they make 20. Since they are both the same number and equal to 20, then 10 is half of 20.
30 or -10 if the 20 is negative.
10% of 20= 10% * 20= 0.1 * 20= 2
10 + 10 + 20 + 20 +20 = 80.
10 minus negative 10 equals 20: 10 - (-10) = 20 or rather 10 + 10 = 20. 10- (minus 10) = 20
20-10 = 10
It is: (20*10)-(20+10) =170
20/10 + 10 = 12 20/(10 + 10) = 1
10
20
20
what is 20 to 10