What is -8y+9x=5,8y+7x=-75 ?

The solution to -8y+9x=5,8y+7x=-75 is x=-35/8 ,y=-355/64

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-8y+9x=5,8y+7x=-75

- 8 y + 9 x = 5, 8 y + 7 x = - 75

x = - \frac{35}{8}, y = - \frac{355}{64}

Solution steps

[- 8 y + 9 x = 5 8 y + 7 x = - 75]

Isolate

y

for

- 8 y + 9 x = 5 : y = - \frac{5 - 9 x}{8}

Substitute

y = - \frac{5 - 9 x}{8}

[8 (- \frac{5 - 9 x}{8}) + 7 x = - 75]

Simplify

[- 5 + 16 x = - 75]

Isolate

x

for

- 5 + 16 x = - 75 : x = - \frac{35}{8}

For

y = - \frac{5 - 9 x}{8}

Substitute

x = - \frac{35}{8}

y = - \frac{5 - 9 ( - \frac{35}{8} )}{8}

- \frac{5 - 9 ( - \frac{35}{8} )}{8} = - \frac{355}{64}

y = - \frac{355}{64}

The solutions to the system of equations are:

x = - \frac{35}{8}, y = - \frac{355}{64}

x + y + z = 18, 4 x + 2 y + z = 36, 6 x + 5 y + 4 z = 36

2 x - 3 y = 4, x + 5 y = 15

a + b = c, c = 3 d

x + 2 y = - 12, 3 x - y = - 1

\frac{2}{x} + \frac{3}{y} = 6, \frac{4}{x} + \frac{5}{y} = 9

What is -8y+9x=5,8y+7x=-75 ?
The solution to -8y+9x=5,8y+7x=-75 is x=-35/8 ,y=-355/64