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Popular >

x+y=7,x-y=-1

Solution

x + y = 7, x - y = - 1

Solution

x = 3, y = 4

Solution steps

[x + y = 7 x - y = - 1]

Isolate

x

for

x + y = 7 : x = 7 - y

Substitute

x = 7 - y

[7 - y - y = - 1]

Simplify

[7 - 2 y = - 1]

Isolate

y

for

7 - 2 y = - 1 : y = 4

For

x = 7 - y

Substitute

y = 4

x = 7 - 4

Simplify

x = 3

The solutions to the system of equations are:

x = 3, y = 4

Popular Examples

2x+3y=13,4x+5y=23

2 x + 3 y = 13, 4 x + 5 y = 23

3 x + y = 11, 2 x + y = 9

13x-6y=2,2x=y+6

13 x - 6 y = 2, 2 x = y + 6

x + y = 24, 2 x - y = - 6

12(x+2y)-8(2x+y)=2,(5x-6y)20(x-4y)=-10

12 (x + 2 y) - 8 (2 x + y) = 2, (5 x - 6 y) 20 (x - 4 y) = - 10

Frequently Asked Questions (FAQ)

What is x+y=7,x-y=-1 ?
The solution to x+y=7,x-y=-1 is x=3,y=4