Question

the avarage of 25,31 and x is 37 what is the value of x?

Answer 1

(25+31+x)/3=37
⇒25+31+x=37×3
⇒25+31+x=111
⇒56+x=111
⇒x=111-56
⇒x=55

Answer 2

25+31+x/3=37
56+x=37*3
56+x=111
x=111-56
x=55