If x = 55, than substitute 55 for x.
22x just equals 22 of x or 22 times x.
22x equals 22(55)
Adding to the mathmatician's answer, like he/she says, that problem actually means 22 times 55. 22 times 55 equals to 1210.
Think of it this way.
1X basically means 1 x X. One times X.
So if 1X= 55, it can also be written as
1 x Χ=55.
So you just substitute the x as 55 and instead of multiplying it by one, you multiply by 22.
22 x 55= 1210
And there you have it!
Hope I helped!
Instead of using x's for multiplication, use *'s, •'s, or ()'s. It is less confusing that way.