यदि दो पेंसिल और तीन रबड़ की कीमत ₹9 है और चार पेंसिल और 6 रबर की कीमत ₹18 हो तो प्रत्येक पेंसिल और प्रत्येक रबर की कीमत ज्ञात करें
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Answer:
pencil ₹3 ki or eraser ₹1
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Step-by-step explanation:
our equation are
2x+3y=9
2x = 9-3y
x = 9-3/2
2
putting the value x in (2)
4x+6y=18
9-3y
4. 2. + 6y = 18
2 (9-3y) + 6y = 18
18 - 6y + 6y = 18
18=18
it is true for all values of x and y
since the given equation has infinitely many solutions,
that is why we cannot obtain a unique solution
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