Question

substitution method:- 7x - 15 Y minus 2 is equal to zero X + 2 Y is equal to zero

plz help me its urgent​

Answer 1

Answer:

$Given \: 7x - 15y -2 = 0\\ \implies 7x-15y = 2\:---(1)$

$x + 2y = 0 \implies x = -2y \: ---(2)$

/* Substitute x = - 2y in equation (1) , we get

$7(-2y) - 15y = 2$

$\implies -14y - 15y = 2$

$\implies - 29y = 2$

$\implies y = \frac{-2}{29}$

$Put \: y = \frac{-2}{29} \:in \: equation \:(2), \\we \:get$

$\implies x = (-2) \times \frac{-2}{29} \\= \frac{-4}{29}$

Therefore.,

$\red {x} \green { = \frac{-4}{29}}$

$\red { y } \green {= \frac{-2}{29}}$

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