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Popular >

x+2y=5,-x+y=4

Solution

x + 2 y = 5, - x + y = 4

Solution

x = - 1, y = 3

Solution steps

[x + 2 y = 5 - x + y = 4]

Isolate

x

for

x + 2 y = 5 : x = 5 - 2 y

Substitute

x = 5 - 2 y

[- (5 - 2 y) + y = 4]

Simplify

[- 5 + 3 y = 4]

Isolate

y

for

- 5 + 3 y = 4 : y = 3

For

x = 5 - 2 y

Substitute

y = 3

x = 5 - 2 \cdot 3

Simplify

x = - 1

The solutions to the system of equations are:

x = - 1, y = 3

Popular Examples

4x+y=-1,5x-2y=-24

4 x + y = - 1, 5 x - 2 y = - 24

a = a + a, a = 7

3x+2y=16,2x+5y=18

3 x + 2 y = 16, 2 x + 5 y = 18

5x+10y=28,15x=20y-121

5 x + 10 y = 28, 15 x = 20 y - 121

x+2y+z=1,4x+3y+5z=5,3x+y+4z=4

x + 2 y + z = 1, 4 x + 3 y + 5 z = 5, 3 x + y + 4 z = 4

Frequently Asked Questions (FAQ)

What is x+2y=5,-x+y=4 ?
The solution to x+2y=5,-x+y=4 is x=-1,y=3