Step-by-step explanation:
1/3,0,9
9,3,27
1/9,3,27
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Answer:75
Step-by-step explanation:
3x+y=19
y=19-3x and y=x+3, at a solution both x and y are equal so we can say y=y:
19-3x=x+3
19-4x=3
-4x=-16
x=4, and since y=x+3
y=7 so the solution is the point:
(4,7)