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Popular >

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

Solution

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

Solution

x = 3, y = - 3

Solution steps

[x + y = 0 2 x - y = 9]

Isolate

x

for

x + y = 0 : x = - y

Substitute

x = - y

[2 (- y) - y = 9]

Simplify

[- 3 y = 9]

Isolate

y

for

- 3 y = 9 : y = - 3

For

x = - y

Substitute

y = - 3

x = - (- 3)

Simplify

x = 3

The solutions to the system of equations are:

x = 3, y = - 3

Popular Examples

2x-y+2z=-4,6x-3y+6z=-12,-4x+2y-4z=8

2 x - y + 2 z = - 4, 6 x - 3 y + 6 z = - 12, - 4 x + 2 y - 4 z = 8

f(x)=2,(x+3)=3(2x^7)

f (x) = 2, (x + 3) = 3 (2 x^{7})

1.34x-6y=0,x+2y=14

1.34 x - 6 y = 0, x + 2 y = 14

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

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

23x+29y=98,29x+23y=110

23 x + 29 y = 98, 29 x + 23 y = 110

Frequently Asked Questions (FAQ)

What is x+y=0,2x-y=9 ?
The solution to x+y=0,2x-y=9 is x=3,y=-3