What is 4x-8y=-14,2x+4y=-7 ?

The solution to 4x-8y=-14,2x+4y=-7 is x=-7/2 ,y=0

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

4x-8y=-14,2x+4y=-7

4 x - 8 y = - 14, 2 x + 4 y = - 7

x = - \frac{7}{2}, y = 0

Solution steps

[4 x - 8 y = - 14 2 x + 4 y = - 7]

Isolate

x

for

4 x - 8 y = - 14 : x = \frac{- 7 + 4 y}{2}

Substitute

x = \frac{- 7 + 4 y}{2}

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

Simplify

[- 7 + 8 y = - 7]

Isolate

y

for

- 7 + 8 y = - 7 : y = 0

For

x = \frac{- 7 + 4 y}{2}

Substitute

y = 0

x = \frac{- 7 + 4 \cdot 0}{2}

\frac{- 7 + 4 \cdot 0}{2} = - \frac{7}{2}

x = - \frac{7}{2}

The solutions to the system of equations are:

x = - \frac{7}{2}, y = 0

2 x + y = 1, 5 x - y = 12

3 x + 3 y = 6, 3 x + 2 y = 4

a + 2 b + 3 c = 0, a + b = 0, b + 3 c = 0

3 x + 2 y = 6, 3 x - y = 0

x + y = 0, 2 x - y = 9