Question 187386
Solve:
{{{2x-3y = 18}}}
{{{5x+3y = 3}}} Add these two equations:
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{{{7x = 21}}} Divide both sides by 7.
{{{x = 3}}} Now substitute this value of x into either  one of the two given equations and solve for y.
{{{5x+3y = 3}}} Substitute x = 3.
{{{5(3)+3y = 3}}} Simplify.
{{{15+3y = 3}}} Subtract 15 from both sides.
{{{3y = -12}}} Finally, divide both sides by 3.
{{{y = -4}}}
The solution is (3, -4)
See the graph, the solution is the point of intersection of the two lines:
{{{graph(400,400,-5,5,-5,5,(2/3)x-6,(-5/3)x+1)}}}