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Popular >

x+y=20,x-y=-6

Solution

x + y = 20, x - y = - 6

Solution

x = 7, y = 13

Solution steps

[x + y = 20 x - y = - 6]

Isolate

x

for

x + y = 20 : x = 20 - y

Substitute

x = 20 - y

[20 - y - y = - 6]

Simplify

[20 - 2 y = - 6]

Isolate

y

for

20 - 2 y = - 6 : y = 13

For

x = 20 - y

Substitute

y = 13

x = 20 - 13

Simplify

x = 7

The solutions to the system of equations are:

x = 7, y = 13

Popular Examples

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

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

((x+3))/y =2,((y+6))/x =-1

\frac{( x + 3 )}{y} = 2, \frac{( y + 6 )}{x} = - 1

0 k = \frac{1}{42}, x = 16

Frequently Asked Questions (FAQ)

What is x+y=20,x-y=-6 ?
The solution to x+y=20,x-y=-6 is x=7,y=13