A
what is the justification for the step taken from line 2 to line 3?
3x+9-7x-x+10+
-4x+9 - 2x+10
-6x-9=10
-6x=1
a. the subtraction property of equality
b. the multiplication property of equality
c. combining like terms on one side of the equation
d. the distributive property

How much money does ron have left each month after his fixed expenses? ron graduated from college five years ago. he recently bought a house, but shares it with a housemate who pays him $800 a month for rent and utilities. ron is putting a budget worksheet together so he will have a better idea of where his money is going and where he can save. enlarge