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Solve for (y)(x) x-y=1 1/2x+y=5
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Jan 27, 2018
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Solve for (y)(x)
x-y=1
1/2x+y=5
Mathematics
middle-school
Dan Hanly
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Dan Hanly
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3
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add them equations to cacncel y
x-y=1
1/2x+y=5 +
3/2x+0y=6
3/2x=6
times 2/3 both sides
x=4
sub back
x-y=1
4-y=1
-y=-3
y=3
x=4
y=3
the orderd pair for the intersection would be (4,3)
(y)(x)=(3)(4)=12
Rachael Tatman
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Jan 29, 2018
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Rachael Tatman
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Using addition
x-y+1/2x+y=1+5
x+1/2x+0y=6
3/2x=6
3x=12
x=4
Using the value of x
x-y=1
4-y=1
y=3
With x as 4 and y as 3, their product is 12
And can be written as (4,3)
Brendaly
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Feb 1, 2018
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Brendaly
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