If Jack gave 1/6 of the money to the theater and kept the rest, that means he kept 5/6 of the money. Multiply 18 by 5/6. 18* 5/6 = 15. Jack kept 15 ten dollar bills. Each bill is worth 10 dollars, so multiply 15 by 10. 15*10=150. Jack kept 150 dollars.
25 - 4x = 15 - 2x + 10
-10 - 10
15 - 4x = 15 - 2x
-15 -15
-4x = - 2x
no solution
