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Popular >

x+y=7,x+3y=15

Solution

x + y = 7, x + 3 y = 15

Solution

x = 3, y = 4

Solution steps

[x + y = 7 x + 3 y = 15]

Isolate

x

for

x + y = 7 : x = 7 - y

Substitute

x = 7 - y

[7 - y + 3 y = 15]

Simplify

[7 + 2 y = 15]

Isolate

y

for

7 + 2 y = 15 : 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

x - y = 5, 2 x + 3 x = 0

7 x + y = 19, 4 x - y = 3

2x+5y=5,-3x+7y=36

2 x + 5 y = 5, - 3 x + 7 y = 36

2x+3y=2,x-y/2 = 1/2

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

3x-5y=4,2y+7=9x

3 x - 5 y = 4, 2 y + 7 = 9 x

Frequently Asked Questions (FAQ)

What is x+y=7,x+3y=15 ?
The solution to x+y=7,x+3y=15 is x=3,y=4