Pls answer this question with steps (proof).

Solve 2x+y=3 x+y=5 in substitution method

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

In the geometric progression –3, 12, −48… what term is 3,072?