Question

5. Solve, the following system of equations by linear combination:

2d + e = 8
d -e = 4

Answer 1

2d +e =8
d-e=4 then d=4+e

substitute
2(4+e)+e=8
8+2e+e=8
3e=0
e=0

so
d=4

Answer 2

2d+e=8
d-e=4
---------

d= 4

Answer 3

is that how you do this?

Answer 4

i kinda for got how do do combinations they dont pop up too much

Answer 5

i know me too!

Answer 6

The solution is (5, 2).


The solution is (4, 0).

There is no solution.

There are an infinite number of solutions.

Answer 7

:)

Answer 8

those are the choices

Answer 9

if you are saying that there are an infinite number of sol

then there is a sol

Answer 10

just many

Answer 11

the answer


no sol.

would be incorrect if that was answered on a test question

Answer 12

ohh ok thanks

Answer 13

well gtg now
sleep

Answer 14

bye bye now

Answer 15

night!

Answer 16

:)