Hayley begins solving this problem by combining like terms.3x 5x = 10

3x + 5x = 10
8x = 10
x = 10/8
x = 5/4

If jon had $4.00 then takes away $2.25, then he should have $1.75 left. $4.00 - $2.25 = $1.75 hope this ; )