Math, asked by mahipancheshwar2, 2 months ago

solve for x and y
solve only by cross multiplication method

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Answered by challasudhakar449

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Answer:

$2x - 3y = 13 \\ 7x - 2y = 20 \\ 6(2x - 3y) = 13 \\ 6(7x - 2y) = 20 \\ 12x - 6y = 13 \\ 42x - 6y = 20 \\ adding \: two \: equations \\ 12x - 6y = 13 \\ 42x - 6y = 20 \\ - 30 x = - 7 \\ x = 7 \div 30 \\ y = 12 \times 7 \div 30 - 6y \\ = 84 \div 30 - 6 = y \\ y = - 96 \div 30$

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