Kaylee spent $153 on some school clothes. she bought a pair of jeans for $45 and t-shirts at $18 each. write an equation to find how many t-shirts kaylee bought.

18x+45=153

153-45=108

108/18= 6

Kaylee bought 6 shirts

Well, We Know That She Spent A Total Amount Of 153 Dollars, And We Need To Find The Number Of Shirts. So, We Can Do:
Number Of Shirts = S
Jeans = J
Cost Of Shirt = C
And Total Amount Of Money Spent = T
So, Using The Information, Lets Write An Equation. We Get:
S = (T - 48) ÷ C
We Need To Find Shirts, So Plug In The Known Values.
This Is Our Equation:
S = (153 - 45) ÷ 18

But, Just For Fun, I Will Solve It. :D

So, We Just Need To Simplify.
153 - 45 = 108
So:
S = 108/18
Now, Simplify The Division.
We Get:
S = 6
So, Kaylee Bought 6 Shirts 
This Is The Soulution. 

Move the decimal behind it