I need help with this please help

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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 is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15