Solve.

{d+e=2

{d-e=4

Use the substitution method.

There are an infinite number of solutions.

There is no solution.

The solution is (5, 1).

The solution is (3, - 1).

Question

Mathematics

Byron Snyder

2 April, 18:45

Solve.

{d+e=2

{d-e=4

Use the substitution method.

There are an infinite number of solutions.

There is no solution.

The solution is (5, 1).

The solution is (3, - 1).

+4

Answers (2)

Know the Answer?

Eddie Dickerson · Answer 1

Adding up the two equations, we have

2d=6

Hence d=3

Then the solution is (3, - 1)

Christopher Briggs · Answer 2

From 1st equation

d + e = 2

d = 2 - e

From 2nd equation, subtitute d with 2 - e

d - e = 4

2 - e - e = 4

2 - 2e = 4

-2e = 2

e = - 1

Find d

d = 2 - e

d = 2 - (-1)

d = 3

The solution is (3,-1)

Solve.{d+e=2{d-e=4Use the substitution method.There are an infinite number of solutions.There is no solution.The solution is (5, 1).The solution is (3, - 1).

Solve.

{d+e=2

{d-e=4

Use the substitution method.

There are an infinite number of solutions.

There is no solution.

The solution is (5, 1).

The solution is (3, - 1).