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OpenStudy (anonymous):
System of Equations Equation I: y = 3x + 5 Equation II: x + y = 3 Solve the above system of equations by using the subsitution method. Show all your work.
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OpenStudy (anonymous):
substitute value of y in 2º equation : x+3x + 5 =3 and solve for x: 4x=-2 x=-1/2 put this value of x in 1º equation and solve for y: y=3(-1/2)+5=-3/2+10/2=7/2
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