Question 372542
1.{{{3y = 4x + 7 }}}
2.{{{5y = 4x + 25}}}
Subtract eq. 1 from eq. 2,
{{{5y-3y=4x-4x+25-7}}}
{{{2y=18}}}
{{{highlight(y=9)}}}
Then use either equation to solve for {{{x}}}.
{{{27=4x+7}}}
{{{4x=20}}}
{{{highlight(x=5)}}}