What is 3x+5y=40,2x+4y=25 ?

The solution to 3x+5y=40,2x+4y=25 is x= 35/2 ,y=-5/2

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3x+5y=40,2x+4y=25

3 x + 5 y = 40, 2 x + 4 y = 25

x = \frac{35}{2}, y = - \frac{5}{2}

Solution steps

[3 x + 5 y = 40 2 x + 4 y = 25]

Isolate

x

for

3 x + 5 y = 40 : x = \frac{40 - 5 y}{3}

Substitute

x = \frac{40 - 5 y}{3}

[2 \cdot \frac{40 - 5 y}{3} + 4 y = 25]

Simplify

[\frac{80 + 2 y}{3} = 25]

Isolate

y

for

\frac{80 + 2 y}{3} = 25 : y = - \frac{5}{2}

For

x = \frac{40 - 5 y}{3}

Substitute

y = - \frac{5}{2}

x = \frac{40 - 5 ( - \frac{5}{2} )}{3}

\frac{40 - 5 ( - \frac{5}{2} )}{3} = \frac{35}{2}

x = \frac{35}{2}

The solutions to the system of equations are:

x = \frac{35}{2}, y = - \frac{5}{2}

3 x - y = 17, 2 x + 3 y = - 4

\frac{( x + y )}{( x - y )} = - 7, \frac{( x + y + 1 )}{( x + y - 1 )} = \frac{3}{4}

1 x - 2 y = 5, 2 x + 3 y = 24

5 x - y = 7, 3 x + 2 y = 12

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

What is 3x+5y=40,2x+4y=25 ?
The solution to 3x+5y=40,2x+4y=25 is x= 35/2 ,y=-5/2