Question 256334
{{{3x + 2y = 100}}}
{{{4x + 3y = 135}}}
Multiply eq. 1 by 4 and eq. 2 by (-3) and add them to get rid of x.
{{{12x+8y+(-12x-9y)=400+(-405)
{{{-y=-5}}}
{{{y=5}}}
Then use either equation to solve for x.
{{{3x+2y=100}}}
{{{3x+10=100}}}
{{{3x=90}}}
{{{x=30}}}