What is 7x-2y=9,4x+6y=15 ?

The solution to 7x-2y=9,4x+6y=15 is x= 42/25 ,y= 69/50

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7x-2y=9,4x+6y=15

7 x - 2 y = 9, 4 x + 6 y = 15

x = \frac{42}{25}, y = \frac{69}{50}

Solution steps

[7 x - 2 y = 9 4 x + 6 y = 15]

Isolate

x

for

7 x - 2 y = 9 : x = \frac{9 + 2 y}{7}

Substitute

x = \frac{9 + 2 y}{7}

[4 \cdot \frac{9 + 2 y}{7} + 6 y = 15]

Simplify

[\frac{36 + 50 y}{7} = 15]

Isolate

y

for

\frac{36 + 50 y}{7} = 15 : y = \frac{69}{50}

For

x = \frac{9 + 2 y}{7}

Substitute

y = \frac{69}{50}

x = \frac{9 + 2 \cdot \frac{69}{50}}{7}

\frac{9 + 2 \cdot \frac{69}{50}}{7} = \frac{42}{25}

x = \frac{42}{25}

The solutions to the system of equations are:

x = \frac{42}{25}, y = \frac{69}{50}

6 x - 5 y = - 9, 4 x + 3 y = 13

x + y = 5, x - y = 7

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

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

2 y - x^{2} = 3, y - x = 1

What is 7x-2y=9,4x+6y=15 ?
The solution to 7x-2y=9,4x+6y=15 is x= 42/25 ,y= 69/50