Question

Whats the error in this problem 19 - 2k = 3k - 1

+ 3k + 3k
19 + 1k - 1
- 19
- 19
k = - 20

Answer 1

Explanation:

Just collect like terms. Follow the +ve and _ve signs as they go over the equation sign where they then become an inverse of themselves and use the signs to work