Math, asked by guddandolly115, 1 year ago

2x-y-3=0and 4x+y-3=0by Cross multiplication

Answers

Answered by wasim47
1
from these you will get
x=1 and y=-1

guddandolly115: but how
wasim47: simply add both the equation you will get x and then the value of x in any of the equation you will get Y
wasim47: mark as brainliest
Answered by misscutie94
1

Answer:

Solution :-

The given equations are;

2x - y - 3 = 0

4x + y - 3 = 0

By Cross multiplication rule, we get

\dfrac{x}{1(- 3) - 1(- 3)} = \dfrac{y}{4(- 3) - 2(- 3)} = \dfrac{1}{2(1) - 4(1)}

\dfrac{x}{- 3 + 3} = \dfrac{y}{- 12 + 6} = \dfrac{1}{2 - 4}

\dfrac{x}{0} = \dfrac{y}{- 6} = \dfrac{1}{- 2}

\Rightarrow \dfrac{x}{0} = \dfrac{1}{- 2}\: and\: \dfrac{y}{- 6} = \dfrac{1}{- 2}

\Rightarrow  x = \dfrac{0}{- 2}\: and\: y\: = \dfrac{- 6}{- 2}

\Rightarrow  x\: = 0\: \:and\: y\: = 3\:

\therefore  The\: value\: of\: x\: = 0\:, y\: = 3\: is\: the\: solution\: of\: the\: system\: of\: the\:given\: equations.\:

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