Question

a.
Solved the simultaneous equation
x = 2y+11
4x+3y=0

Answer 1

Answer:

$x = 2y + 11is \: given \\ put \: value \: of \: xineq2 \\ 4(2y + 11) + 3y = 0 \\ 8y + 11 + 3y = 0 \\ 11y = - 11 \\ y = - 1 \\ x = 2y + 11 \\ = 2 \times - 1 + 11 = 10$

Answer 2

Answer:

$x = 2y + 11 \\ x - 2y = 11.......(1) \\ 4x + 3y = 0.......(2) \\ multiplying \: equation \: (1)by \: 3 \\ 3x - 6y = 33 .......(3)\\ multiplying \: equation \: (2) \: by \: 2 \\ 8x + 6y = 0........(4) \\ subtrcting \: equation \: (3)from(4) \\ 3x - 6y = 33 \\ 8x + 6y = 0 \\ 11x \: \: \: \: \: \: \: \: = 33 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: x = \frac{33}{11} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: x = 3$

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