mjoanna mjoanna

01-12-2016
Mathematics

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X+4y=6 y=-x+3 solve each system of linear equations by substitution

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ivanzud ivanzud

01-12-2016

Plug in one of the equations for y. x+4(-x+3)=6. Solve for x. Then plug in x into one of the equations to get y. x-4x+12=6. -3x=-6. x=2. y=-2+3=1. X=2 and y=1.

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An(A)=25,n(B)=40,n(AuB)=50AnB