Question

The three Math Idol judges have been eliminating contestants all day! The number of one-step equations and two-step equations who have been eliminated today is equal to 1150. If three times the number of one-step equations minus twice the number of two-step equations is equal to 1300, how many one-step equations eliminated today?

answers:

430

720

1150

1300

Answer 1

If your curious and want to learn, this is how you set it up...
o = one step equations
t = two step equations

o + t = 1150 -->t = 1150 - o
3o - 2t = 1300

Now you would sub 1150 - o in for t in the 2nd equation and then solve for o.

Answer 2

thank you so much!