What is 11x-13y=53,7x+9y=-139 ?

The solution to 11x-13y=53,7x+9y=-139 is x=-7,y=-10

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11x-13y=53,7x+9y=-139

11 x - 13 y = 53, 7 x + 9 y = - 139

x = - 7, y = - 10

Solution steps

[11 x - 13 y = 53 7 x + 9 y = - 139]

Isolate

x

for

11 x - 13 y = 53 : x = \frac{53 + 13 y}{11}

Substitute

x = \frac{53 + 13 y}{11}

[7 \cdot \frac{53 + 13 y}{11} + 9 y = - 139]

Simplify

[\frac{371 + 190 y}{11} = - 139]

Isolate

y

for

\frac{371 + 190 y}{11} = - 139 : y = - 10

For

x = \frac{53 + 13 y}{11}

Substitute

y = - 10

x = \frac{53 + 13 ( - 10 )}{11}

\frac{53 + 13 ( - 10 )}{11} = - 7

x = - 7

The solutions to the system of equations are:

x = - 7, y = - 10

4 x + 3 y = 18, 5 x + 6 y = 27

\frac{x}{2} + y = 0, x - \frac{y}{3} = \frac{1}{2}

7 x + 3 y = 46, 12 x - 5 y = 18

a = 4, b = 2

4 x - y = 8, x + y = 7

What is 11x-13y=53,7x+9y=-139 ?
The solution to 11x-13y=53,7x+9y=-139 is x=-7,y=-10