What is 2x+7y=20,3x-7y=4 ?

The solution to 2x+7y=20,3x-7y=4 is x= 24/5 ,y= 52/35

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2x+7y=20,3x-7y=4

2 x + 7 y = 20, 3 x - 7 y = 4

x = \frac{24}{5}, y = \frac{52}{35}

Solution steps

[2 x + 7 y = 20 3 x - 7 y = 4]

Isolate

x

for

2 x + 7 y = 20 : x = \frac{20 - 7 y}{2}

Substitute

x = \frac{20 - 7 y}{2}

[3 \cdot \frac{20 - 7 y}{2} - 7 y = 4]

Simplify

[\frac{60 - 35 y}{2} = 4]

Isolate

y

for

\frac{60 - 35 y}{2} = 4 : y = \frac{52}{35}

For

x = \frac{20 - 7 y}{2}

Substitute

y = \frac{52}{35}

x = \frac{20 - 7 \cdot \frac{52}{35}}{2}

\frac{20 - 7 \cdot \frac{52}{35}}{2} = \frac{24}{5}

x = \frac{24}{5}

The solutions to the system of equations are:

x = \frac{24}{5}, y = \frac{52}{35}

7 p - 52.41 p = 63, r = 3

4 x + 2 y = - 7, 2 x + 3 y = - 95

3 x + 2 y = 14, - x + 4 y = 7

4 x + 3 y = 84, 2 x + 5 y = 70

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

What is 2x+7y=20,3x-7y=4 ?
The solution to 2x+7y=20,3x-7y=4 is x= 24/5 ,y= 52/35