SOLUTION: x-3y=0 3x+y=7
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Question 276756
:
x-3y=0 3x+y=7
Answer by
checkley77(12844)
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x-3y=0
x=3y
Replace x in the next equation with (3y)
3x+y=7
3(3y)+y=7
9y+y=7
10y=7
y=7/10
y=.7 ans.
x=3*.7
x=2.1 ans.
Proof:
3*2.1+.7=7
6.3+.7=7
7=7