Question 83607
{{{6b+14=-7-b}}} Start with the given equation
{{{6b+b+14=-7}}} Add b to both sides
{{{6b+b=-7-14}}} Subtract 14 from both sides
{{{7b=-21}}} Combine like terms
{{{b=-3}}} Divide both sides by 7

Check:
{{{6(-3)+14=-7-(-3)}}} Plug in b=-3
{{{-18+14=-7+3}}} Multiply
{{{-4=-4}}} Add. So this verifies our answer

I'm assuming that's the steps you took to get that answer. I'm also assuming that when you added -7-(-3), you accidentally said -7-3=-10 instead of -7-(-3)=-4, which might explain why your verification didn't work