Question 137535
1. {{{x+9y=53}}}
2.{{{2x+9y=52}}}
Use equation 1 to solve for x.
1. {{{x+9y=53}}}
{{{x=53-9y}}}
Now substitute this value into equation 2.
2.{{{2x+9y=52}}}
{{{2(53-9y)+9y=52}}}
{{{106-18y+9y=52}}}
{{{-9y=-54}}}
{{{y=6}}}
Now go back and solve for x.
{{{x=53-9y}}}
{{{x=53-9(6)}}}
{{{x=53-54}}}
{{{x=-1}}}
The solution is x=-1 and y=6.