Question

Solve each system by elimination.
−5x − 10y = 15
−3x + 10y = 25

Answer 1

x = -5 and y = 1

Explanation:

use elimination

Answer 2

`\boxed{x = -5~~and~~ y =1}`

Explanation:

-5x - 10y = 15

-3x + 10y = 25 +

-8x = 40

`x = (40)/(-8)`

x = -5

.

Substitute the value of x to one of equations

-5(-5) - 10y = 15

25 - 10y = 15

-10y = 15 - 25

-10y = -10

`y = (-10)/(-10)`

y = 1