What is x+y=50,10x+20y=8000 ?

The solution to x+y=50,10x+20y=8000 is x=-700,y=750

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x+y=50,10x+20y=8000

x + y = 50, 10 x + 20 y = 8000

x = - 700, y = 750

Solution steps

[x + y = 50 10 x + 20 y = 8000]

Isolate

x

for

x + y = 50 : x = 50 - y

Substitute

x = 50 - y

[10 (50 - y) + 20 y = 8000]

Simplify

[500 + 10 y = 8000]

Isolate

y

for

500 + 10 y = 8000 : y = 750

For

x = 50 - y

Substitute

y = 750

x = 50 - 750

Simplify

x = - 700

The solutions to the system of equations are:

x = - 700, y = 750

1042 x + 347 y = 21, 652 x + 551 y = - 2

\frac{x}{2} + \frac{y}{3} = 7, \frac{x}{3} + \frac{y}{2} = 8

\frac{2}{5} x + \frac{3}{5} y = 3, 7 x - y = 30

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

3 x - 5 y = 30, 3 x - 2 y = 21

What is x+y=50,10x+20y=8000 ?
The solution to x+y=50,10x+20y=8000 is x=-700,y=750