Math, asked by aditya6257, 1 year ago

solve for x and y
3x - 6у - 19 = (0),
-7х + 3y + 1 = (0),

Answers

Answered by Anonymous
0

3x - 6y - 19 = 0 \\  \\ 3x - 6y = 19...eq(1) \\  \\  - 7x + 3y + 1  = 0 \\  \\  - 7x + 3y =  - 1....eq(2) \\  \\ =  >  take \: equation(1) + equation(2) \times 2 \\  \\  \:  \:  \:  \: 3x - 6y = 19 \\  - 14x + 6y =  - 2 \\ ............................. \\ \:  \:  \:  11x \:  \:  = 17 \\  \\  \:  \:  \:  x =  \frac{17}{11} .......ans(1) \\  \\ value \: of \: x \: put \: in \: any \: equation \\  \\  \:  \:  - 7( \frac{17}{11} ) + 3y =  - 1 \\  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 3y =  - 1 +  \frac{119}{11}  \\  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  3y =  \frac{119}{11}  -  \frac{11}{11}  \\  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  3y =  \frac{108}{11}  \\  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  y =  \frac{36  \times 3}{11 \times 3}  \\  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: y =  \frac{36}{11} ....ans(2) \\ hope \: it \: helps \: you

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