What’s the like terms for 12+5-4+15t+1

The like terms are 12, 5, -4, 1...

I know this because none of them have a variable, and because i just learned this a few months ago, (and got an A...)

The 15 with the variable do not have like terms because it has a variable and none of the other number do...

Sorry if this doesn't make sense.. Hope this helps... Stay safe and have a great day/night!!! :D

The answer is 5
Explanation:
We need to use the Pythagorean,
a^2 + b^2 = c^2
Where c is the hypotenuse
We can fill in spots now 12^2 + b^2 = 13^2
And then we solve 144 + b^2 = 169
Next we get b^2 alone
169-144=25
So we get b^2=25
For the final step you have to find the square root of 25 to get b alone which is 5