Question 174724
{{{12x+7y=19}}} Start with the first equation.



{{{(12x+7y)-(4x-y)=19-3}}} Subtract the second equation from the first equation.



{{{12x+7y-4x+y=19-3}}} Distribute



{{{8x+8y=16}}} Combine like terms.



So the answer is {{{8x+8y=16}}}