What is the interquartile for this problem

18,19,22,22,25,25,26,31,32,34,37,37 ,37

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

The product of 3 and a number increased by 8 is 31

Iknow the square root of 2 is irrational