System of equations x+y = 7 3xy=1
We can solve this system of equations by reduction method.
x+y=7
3xy=1

4x=8 ⇒x=8/4=2
3(x+y=7)
3xy=1

4y=20 ⇒y=20/4=5
Answer: x=2, y=5
we can solve this systeme by susbtitution method.
x+y=7 ⇒ x=7y
3xy=1
3(7y)y=1
213yy=1
4y=121
4y=20
y=20/4=5
x=7y=75=2
Answer: x=2, y=5.
We can solve this systemen of equation by equalization method.
x+y=7 ⇒y=7x
3xy=1 ⇒y=3x1
7x=3x1
x3x=17
4x=8
x=8/4=2
y=7x
y=72=5
Answer: x=2, y=5
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