Find the variable 23+m=51

The answer is 28.

Explanation / Working

23 + m = 51

m = 51 - 23

m = 28

When the positive 23 goes over the equal sign it changed to negative, causing it to be subtracted from 51, thus providing the answer.

HOPE IT HELPS.

x = 25

step-by-step explanation:

a^2+b^2=c^2

7^2+24^2=c^2

49+576=625

sqrt625=25

x=25