Question

3x - 5y =6 and 2x+3y=7​

Answer 1

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$3x - 5y = 6$

$x = \frac{6 + 5y}{3}$

put x value in another equation

$2( \frac{6 + 5y}{3} ) + 3y = 7$

$\frac{12 + 10y}{3} + 3y = 7$

$12 + 10y + 9y = 21$

$19y = 21 - 12$

$19y = 9$

$y = \frac{9}{21}$=3/7

put y value in

$x = \frac{12 + 10 \times \frac{9}{21} }{3} = 22 \times \frac{9}{7} = \frac{198}{7}$

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Answer 2

Step-by-step explanation:

Answer:

$\huge\tt\underline\purple{Answer }$

$4x - 5y + 16 = 0$

$x = \frac{16 + 5y}{4}$

put value of x in another equation

$2( \frac{16 + 5y}{4} ) + y - 6 = 0$

$\frac{32 + 10y}{4} + y - 6 = 0$

$32 + 10y + 4y - 24 = 0$

$14y + 8 = 0$

$14y = - 8$

$y = - \frac{8}{14} = - \frac{4}{7}$

put y value in

$x = \frac{32 + 10 \times - \frac{4}{7} }{4} = 8 + 10 \times - \frac{4}{7}$

$18 \times - \frac{4}{7} = - \frac{72}{7}$