What is 11x-9y=21,3x-15y=-2 ?

The solution to 11x-9y=21,3x-15y=-2 is x= 111/46 ,y= 85/138

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11x-9y=21,3x-15y=-2

11 x - 9 y = 21, 3 x - 15 y = - 2

x = \frac{111}{46}, y = \frac{85}{138}

Solution steps

[11 x - 9 y = 21 3 x - 15 y = - 2]

Isolate

x

for

11 x - 9 y = 21 : x = \frac{21 + 9 y}{11}

Substitute

x = \frac{21 + 9 y}{11}

[3 \cdot \frac{21 + 9 y}{11} - 15 y = - 2]

Simplify

[\frac{63 - 138 y}{11} = - 2]

Isolate

y

for

\frac{63 - 138 y}{11} = - 2 : y = \frac{85}{138}

For

x = \frac{21 + 9 y}{11}

Substitute

y = \frac{85}{138}

x = \frac{21 + 9 \cdot \frac{85}{138}}{11}

\frac{21 + 9 \cdot \frac{85}{138}}{11} = \frac{111}{46}

x = \frac{111}{46}

The solutions to the system of equations are:

x = \frac{111}{46}, y = \frac{85}{138}

3 x + 2 y = 19, 4 x - y = 29

x + y = - 2, 2 x - y = 26

x - 2 y = - 5, x + 2 y = 7

y = 0, x = 0, x = 2

3 n = 9, n = 3

What is 11x-9y=21,3x-15y=-2 ?
The solution to 11x-9y=21,3x-15y=-2 is x= 111/46 ,y= 85/138