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Schach [20]
2 years ago
14

Solve by substitution X+3y=1 and -3x-3y=-15

Mathematics
1 answer:
joja [24]2 years ago
3 0
x+3y=1\\ -3x-3y=-15\\ add\quad the\quad equ.\\ (x+3y)+(-3x-3y)=1-15\\ x-3x+3y-3y=-14\\ -2x=-14\\ x=\frac { -14 }{ -2 } \\ x=7\\ Let's\quad rewrite\quad the\quad equ.\\ 7+3y=1\\ 3y=1-7\\ 3y=-6\\ y=\frac { -6 }{ 3 } \\ y=-2
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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If (x , y) are the coordinates of the mid-point of a line whose end

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Learn more:

You can learn more about the circle in brainly.com/question/9510228

#LearnwithBrainly

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