Question

Solve the system of equations and choose the correct answer from the list of options.

d + e = 1
−d + e = −5

Label the ordered pair as (d, e).


(0,0)
(3, -2)
(-2, 3)
(-3, 0)

Answer 1

Getting the solution of two linear equations, we can apply method related to that.

We can uses simple elimination by adding the two equations.
d + e = 1
−d + e = −5
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2e = -4
e = -2

d + e = 1
d - 2 = 1
d = 3

so the solution is in the form (d,e) is (3, -2)

So the answer is (3,-2).