What is -10x-2y=12,-7x-4y=-15 ?

The solution to -10x-2y=12,-7x-4y=-15 is x=-3,y=9

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-10x-2y=12,-7x-4y=-15

- 10 x - 2 y = 12, - 7 x - 4 y = - 15

x = - 3, y = 9

Solution steps

[- 10 x - 2 y = 12 - 7 x - 4 y = - 15]

Isolate

x

for

- 10 x - 2 y = 12 : x = - \frac{6 + y}{5}

Substitute

x = - \frac{6 + y}{5}

[- 7 (- \frac{6 + y}{5}) - 4 y = - 15]

Simplify

[\frac{42 - 13 y}{5} = - 15]

Isolate

y

for

\frac{42 - 13 y}{5} = - 15 : y = 9

For

x = - \frac{6 + y}{5}

Substitute

y = 9

x = - \frac{6 + 9}{5}

- \frac{6 + 9}{5} = - 3

x = - 3

The solutions to the system of equations are:

x = - 3, y = 9

2 x + 3 y = 25, 4 x - y = 15

x + 7 y = 8, 3 x + 2 y = 5

2 x + y = 23, 4 x - y = 19

- 4 y = - 11, 5 x + 6 y = 7

15 x - 17 y = 21, 17 x - 15 y = 11

What is -10x-2y=12,-7x-4y=-15 ?
The solution to -10x-2y=12,-7x-4y=-15 is x=-3,y=9