What is 3x+7y=5,2x-4y=-9 ?

The solution to 3x+7y=5,2x-4y=-9 is x=-43/26 ,y= 37/26

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

3x+7y=5,2x-4y=-9

3 x + 7 y = 5, 2 x - 4 y = - 9

x = - \frac{43}{26}, y = \frac{37}{26}

Solution steps

[3 x + 7 y = 5 2 x - 4 y = - 9]

Isolate

x

for

3 x + 7 y = 5 : x = \frac{5 - 7 y}{3}

Substitute

x = \frac{5 - 7 y}{3}

[2 \cdot \frac{5 - 7 y}{3} - 4 y = - 9]

Simplify

[\frac{10 - 26 y}{3} = - 9]

Isolate

y

for

\frac{10 - 26 y}{3} = - 9 : y = \frac{37}{26}

For

x = \frac{5 - 7 y}{3}

Substitute

y = \frac{37}{26}

x = \frac{5 - 7 \cdot \frac{37}{26}}{3}

\frac{5 - 7 \cdot \frac{37}{26}}{3} = - \frac{43}{26}

x = - \frac{43}{26}

The solutions to the system of equations are:

x = - \frac{43}{26}, y = \frac{37}{26}

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

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

x + 5 y = 15, 2 x - 3 y = 1

\frac{x}{2} - \frac{y}{5} = 4, \frac{x}{7} + \frac{y}{15} = 3

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

What is 3x+7y=5,2x-4y=-9 ?
The solution to 3x+7y=5,2x-4y=-9 is x=-43/26 ,y= 37/26