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Popular >

x+y=1,2x-y=8

Solution

x + y = 1, 2 x - y = 8

Solution

x = 3, y = - 2

Solution steps

[x + y = 1 2 x - y = 8]

Isolate

x

for

x + y = 1 : x = 1 - y

Substitute

x = 1 - y

[2 (1 - y) - y = 8]

Simplify

[2 - 3 y = 8]

Isolate

y

for

2 - 3 y = 8 : y = - 2

For

x = 1 - y

Substitute

y = - 2

x = 1 - (- 2)

Simplify

x = 3

The solutions to the system of equations are:

x = 3, y = - 2

Popular Examples

x + y = 10, 2 x - y = 20

(d)(3 y/2)-(5 x/3)=-2,(y/3)+(x/3)= 13/6

(d) (3 \frac{y}{2}) - (5 \frac{x}{3}) = - 2, (\frac{y}{3}) + (\frac{x}{3}) = \frac{13}{6}

4n-2m-3r=1,m+3n+5r=-4,3m-5n+r=0

4 n - 2 m - 3 r = 1, m + 3 n + 5 r = - 4, 3 m - 5 n + r = 0

3x-4y=6,4x+5y=2

3 x - 4 y = 6, 4 x + 5 y = 2

5x+3y=1, 3/4*x-y=2

5 x + 3 y = 1, \frac{3}{4} \cdot x - y = 2

Frequently Asked Questions (FAQ)

What is x+y=1,2x-y=8 ?
The solution to x+y=1,2x-y=8 is x=3,y=-2