(5 + 20) x 2 - 15 =

i dont think it is a vaiable because a number is always in front of a variable or the variable is by itself.

Is x a multipulication symbol?  Or variable?

wok in and out of the parenthisis 20+5=25 then 25*2=50-15 then boom 35 see did it without the calculator you know the phrase look mama no hands well look melody no calculator!

Yeah!

5+20=25

25*2=50

50-15=35

That is assuming x means multipulication!