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?

Answer 1

let number of 1 step equations be x
let number of 2 step equations be y

It says total number is 1150: so x + y = 1150
Second part of the question says: 3x -2y = 1300

Try to solve this set of equations. Suggested technique: elimination

Answer 2

430?

Answer 3

I think that 430 would be the number of 2 step equations, not one step equations.

Answer 4

o ok so 720 then?

Answer 5

yes... good :)

Answer 6

thanks

Answer 7

cutie :)