What is 5x+y=-9,7x+3y=-39 ?

The solution to 5x+y=-9,7x+3y=-39 is x= 3/2 ,y=-33/2

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

5x+y=-9,7x+3y=-39

5 x + y = - 9, 7 x + 3 y = - 39

x = \frac{3}{2}, y = - \frac{33}{2}

Solution steps

[5 x + y = - 9 7 x + 3 y = - 39]

Isolate

x

for

5 x + y = - 9 : x = \frac{- 9 - y}{5}

Substitute

x = \frac{- 9 - y}{5}

[7 \cdot \frac{- 9 - y}{5} + 3 y = - 39]

Simplify

[\frac{- 63 + 8 y}{5} = - 39]

Isolate

y

for

\frac{- 63 + 8 y}{5} = - 39 : y = - \frac{33}{2}

For

x = \frac{- 9 - y}{5}

Substitute

y = - \frac{33}{2}

x = \frac{- 9 - ( - \frac{33}{2} )}{5}

\frac{- 9 - ( - \frac{33}{2} )}{5} = \frac{3}{2}

x = \frac{3}{2}

The solutions to the system of equations are:

x = \frac{3}{2}, y = - \frac{33}{2}

3 x + 4 y = 30, 3 x - y = 15

2 x + y = 3, - 4 x + 5 y = - 13

3 x - y + 5 = 3, x - y - 2 = 0

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

x + y = 2, x - z = 0, w (x, y, z) = 2 x + y - z

What is 5x+y=-9,7x+3y=-39 ?
The solution to 5x+y=-9,7x+3y=-39 is x= 3/2 ,y=-33/2