Question

Twice a number plus three times a second number is negative one. The first number plus four times the second number is two.

Answer 1

The first number is -2 and the second number is 1.

Explanation:

2n + 3s = -1

(n + 4s = 2)-2 Multiply by -2 to cancel the n

2n + 3s = -1

-2n - 8s = -4 Add these equations together

-5s = -5 Divide both sides by -5

s = 1

Plug this into the first equation to find the value of n

2n + 3(1) = -1 Multiply

2n + 3 = -1

- 3 - 3 Subtract 3 from both sides

2n = -4 Divide both sides by 2

n = -2

Answer 2

Explanation:

The first number is -2 and the second number is 1