SOLUTION: Consider the system of equations 3x+2y=17 x-y=-1

SOLUTION: Consider the system of equations 3x+2y=17 x-y=-1

Algebra.Com

Question 19795: Consider the system of equations
3x+2y=17
x-y=-1
Answer by xcentaur(357) (Show Source): You can put this solution on YOUR website!
3x+2y=17.....[1]
x-y=-1.......[2]

multiply eqn[2] by 2
3x+2y=17
2x-2y=-2

Add up both the equations:
3x+2y+(2x-2y)=17+(-2)
5x=17-2
5x=15
x=3

x-y=-1
-y=-1-x
-y=-(1+x)
y=1+x
y=1+3
y=4

x=3,y=4

-xC

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