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-3x+4=15, 4x-y=-19 what is the solution by combining equations
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5 votes
-3x+4=15, 4x-y=-19 what is the solution by combining equations

User Idrougge
by
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1 Answer

5 votes
-3x+4=15
-3x=15-4
-3x=11
x= -11/3

4(-11/3)-y= -19
-44/3-y= -19
-y= -19+44/3 multiply by (-1)
y=19-44/3
y=19•3/3-44/3
y=57/3-44/3
y=13/3

(x,y)=(-11/3, 13/3)



User Peter Farmer
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