en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

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

Solution

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

Solution

x = \frac{13}{2}, y = - \frac{3}{2}

Solution steps

[x + y = 5 3 x + y = 18]

Isolate

x

for

x + y = 5 : x = 5 - y

Substitute

x = 5 - y

[3 (5 - y) + y = 18]

Simplify

[15 - 2 y = 18]

Isolate

y

for

15 - 2 y = 18 : y = - \frac{3}{2}

For

x = 5 - y

Substitute

y = - \frac{3}{2}

x = 5 - (- \frac{3}{2})

5 - (- \frac{3}{2}) = \frac{13}{2}

x = \frac{13}{2}

The solutions to the system of equations are:

x = \frac{13}{2}, y = - \frac{3}{2}

Popular Examples

x+4y=-25,-10x-5y=5

x + 4 y = - 25, - 10 x - 5 y = 5

5x+7y=17,2x+y=5

5 x + 7 y = 17, 2 x + y = 5

12x-13y=9,-4x+17y=35

12 x - 13 y = 9, - 4 x + 17 y = 35

2x+3y=13,5x+2y=16

2 x + 3 y = 13, 5 x + 2 y = 16

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

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

Frequently Asked Questions (FAQ)

What is x+y=5,3x+y=18 ?
The solution to x+y=5,3x+y=18 is x= 13/2 ,y=-3/2