I really need this ASAP please i have to submit it noww

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

Which of the following transformations will always produce a congruent figure?

Can you me find the missing length. i attached an image.