can you please solve this problem for me? 81+2k=5k?

Subtract both sides by 2k and then, divide both sides by 3:

81 - 2k + 2k = 5k - 2k

81 = 3k

k = 81/3

k = 27

I hope this helps!

K is a variable just as X is don't let it confuse you, here are the steps

81+2k=5k

81+2k - 2k =5k -2k

81 = 3k

81/3 = 3k/3

27 = k

plug it back in to get

81 + 54 = 135

=)

minus the 2k from 5k

81 = 3k

divide 81 by 3

k =?

5k = 81+2k

(LHS) ... (RHS)

When we bring 2k to the left hand side, its sign will change to minus..

5k - 2k = 81

we can subtract 5k and 2k as they both have common variable k

so.. 3k = 81

now shifting 3 to the other side of equal sign, we will get the value of k... 3k means 3 is multiplying with k; so when you shift the 3 to the right hand side, it will turn into division...

k = 81/3

k = 27

5k = 2k + 81

3k = 81

k = 27.