13
Only if you subtract three.
10+2+1
4! - 44/4 = 24 - 11 = 13
1 + 12 = WHAT
The one-step equation that equals 13 is x = 13. In this equation, x represents the unknown value that, when solved, will equal 13. This is a simple linear equation that can be solved by performing the inverse operation, which in this case would be x = 13.
To make 24 using 22, 9, 5, and 13, you can use the following equation: (22 - 9) + (13 - 5) = 24. This equation breaks down as follows: 22 minus 9 equals 13, and 13 minus 5 equals 8. Adding 13 and 8 together gives you 24.
5
13
3x4+1
40
1 + 12 = 13