en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x+y=1,1x-y=-7

Solution

x + y = 1, 1 x - y = - 7

Solution

x = - 3, y = 4

Solution steps

[x + y = 1 1 \cdot x - y = - 7]

Isolate

x

for

x + y = 1 : x = 1 - y

Substitute

x = 1 - y

[1 \cdot (1 - y) - y = - 7]

Simplify

[1 - 2 y = - 7]

Isolate

y

for

1 - 2 y = - 7 : y = 4

For

x = 1 - y

Substitute

y = 4

x = 1 - 4

Simplify

x = - 3

The solutions to the system of equations are:

x = - 3, y = 4

Popular Examples

4x+2y=2,2x-3y=-11

4 x + 2 y = 2, 2 x - 3 y = - 11

4x+5y=5,-10y-4x=-7

4 x + 5 y = 5, - 10 y - 4 x = - 7

8 x - 3 y = 9, x - 5 y = 1

4a-5b=-23,2a+b=-1

4 a - 5 b = - 23, 2 a + b = - 1

4x+2y=1,4-4x+y=1

4 x + 2 y = 1, 4 - 4 x + y = 1

Frequently Asked Questions (FAQ)

What is x+y=1,1x-y=-7 ?
The solution to x+y=1,1x-y=-7 is x=-3,y=4