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Popular >

x-y=1,x+y=9

Solution

x - y = 1, x + y = 9

Solution

x = 5, y = 4

Solution steps

[x - y = 1 x + y = 9]

Isolate

x

for

x - y = 1 : x = 1 + y

Substitute

x = 1 + y

[1 + y + y = 9]

Simplify

[1 + 2 y = 9]

Isolate

y

for

1 + 2 y = 9 : y = 4

For

x = 1 + y

Substitute

y = 4

x = 1 + 4

Simplify

x = 5

The solutions to the system of equations are:

x = 5, y = 4

Popular Examples

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

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

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

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

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

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

Frequently Asked Questions (FAQ)

What is x-y=1,x+y=9 ?
The solution to x-y=1,x+y=9 is x=5,y=4