Question

What is the solution of 7k+2=4k-10?

Answer 1

$7k+2=4k-10\ \ \ |-2\\\\7k=4k-12\ \ \ \ |-4k\\\\3k=-12\ \ \ \ |:3\\\\k=-4\\\\check:\\L=7(-4)+2=-28+2=-26\\R=4(-4)-10=-16-10=-26\\L=R$

Answer 2

3k = -12 => k = -4

I Hope this helps...