What is x-y+4=3,x+y+4=0 ?

The solution to x-y+4=3,x+y+4=0 is x=-5/2 ,y=-3/2

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x-y+4=3,x+y+4=0

x - y + 4 = 3, x + y + 4 = 0

x = - \frac{5}{2}, y = - \frac{3}{2}

Solution steps

[x - y + 4 = 3 x + y + 4 = 0]

Isolate

x

for

x - y + 4 = 3 : x = y - 1

Substitute

x = y - 1

[y - 1 + y + 4 = 0]

Simplify

[2 y + 3 = 0]

Isolate

y

for

2 y + 3 = 0 : y = - \frac{3}{2}

For

x = y - 1

Substitute

y = - \frac{3}{2}

x = - \frac{3}{2} - 1

- \frac{3}{2} - 1 = - \frac{5}{2}

x = - \frac{5}{2}

The solutions to the system of equations are:

x = - \frac{5}{2}, y = - \frac{3}{2}

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

x - 4 y = 12, 3 x + 5 y = 6

4821 x + 47 y = 110, 47 x + 21 y = 162

x + y + z = 7, 2 x + 3 y + z = 13, 3 x - y + 2 z = 12

3 x + y = 21, 2 x - y = 4