Question

Which of the following is the solution set of 18 - 3n + 2 = n + 20 - 4n?

Answer 1

MEDAL FOR THE ANSWER?

Answer 2

Yeahhhh (:

Answer 3

The equation is
18 - 3n + 2 = n + 20 - 4n
-3n + 4n - n = 20 -18 - 2
0 = 0

for n = 0

18 - 3*0 + 2 = 0 + 20 - 4*0
18 + 2 = 20
20 = 20

SO
for n = 1

18 - 3*1 + 2 = 1 + 20 - 4*1
18 - 3 + 2 = 1 + 20 - 4
17 = 17

for n = -1

18 - 3*(-1) + 2 = -1 + 20 - 4*(-1)
18 + 3 + 2 = -1 + 20 + 4
23 = 23

for n = -2

18 -3*(-2) + 2 = -2 + 20 -4*(-2)
18 + 6 + 2 = -2 + 20 + 8
26 = 26

so n = [-infinity , ..., 0 , ... , infinity]

Answer 4

GOOD?

Answer 5

Yes .. Thankyouuu (: ....

Answer 6

Bye!

Answer 7

Byeee (: