Question 178658
1.{{{5x-3y=35}}}
2.{{{y=x-y}}}
Re-arrange eq. 2,
2.{{{y=x-y}}}
{{{2y=x}}}
{{{x=2y}}}
Substitute for x with this expression and solve for y in eq. 1,
1.{{{5x-3y=35}}}
{{{5(2y)-3y=35}}}
{{{10y-3y=35}}}
{{{7y=35}}}
{{{highlight( y=5)}}}
Then from eq. 2,
{{{x=2y}}}
{{{x=2(5)}}}
{{{highlight( x=10)}}}