Question

If 5k + 8=-7 + 2k, what is the value of 3k?

Answer 1

how would I approach this problem?

Answer 2

First: solve the "k" variable. combine "like" terms - subtract 2k from both sides

Answer 3

oh

Answer 4

thats what you would have
5K - 2k+8 = -7+2k - 2k
5K - 2k+8 = -7
3k+8 = - 7

Answer 5

than subtract 8 from both sides...

Answer 6

k=-5

Answer 7

3k+8 -8 = - 7 - 8
3k = - 7 - 8
3k = - 15

than divide both sides by 3k

Answer 8

yes but wait

Answer 9

3k/3 = - 15/3
k = -15/3
k = - 5
so we have -5 right?

Answer 10

do i plug -5 into 3k?

Answer 11

Now, find the value of 3k. Replace (-5) with the k" variable in 3k.

Answer 12

what do you get?

Answer 13

-15?

Answer 14

yes good

Answer 15

thank you

Answer 16

yw