Resolver los siguientes problemas de ecuaciones e inecuaciones

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

If angle 2=3x +1 and angle 3=2x +4what is angle 2

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