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 auditioned today?

430

720

1150

1300

Answer 1

lol, thanks

Answer 2

x = one step
y = two steps

Answer 3

x + y = 1150
3x - 2y = 1300

Answer 4

y = 1150 - x
y = (3x - 1300)/2

y = y
2(1150 - x) = 3x - 1300
2300 - 2x = 3x - 1300
2300 + 1300 = 5x
3600 = 5x
x = 3600/5
x = 720
y = 430

Answer 5

720 one-step equations auditioned today