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Popular >

x+y=1,1x-y=3

Solution

x + y = 1, 1 x - y = 3

Solution

x = 2, y = - 1

Solution steps

[x + y = 1 1 \cdot x - y = 3]

Isolate

x

for

x + y = 1 : x = 1 - y

Substitute

x = 1 - y

[1 \cdot (1 - y) - y = 3]

Simplify

[1 - 2 y = 3]

Isolate

y

for

1 - 2 y = 3 : y = - 1

For

x = 1 - y

Substitute

y = - 1

x = 1 - (- 1)

Simplify

x = 2

The solutions to the system of equations are:

x = 2, y = - 1

Popular Examples

-2x+5y=13,16x+3y=25

- 2 x + 5 y = 13, 16 x + 3 y = 25

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

5 x - y = 6, x + 3 y = 10

x+6y=27,7x-3y=9

x + 6 y = 27, 7 x - 3 y = 9

3x-5y=20,6x-10y=40

3 x - 5 y = 20, 6 x - 10 y = 40

Frequently Asked Questions (FAQ)

What is x+y=1,1x-y=3 ?
The solution to x+y=1,1x-y=3 is x=2,y=-1