Question 798553
First expand to
{{{ 5 = -2 -6t -t }}}
Then add 2 to each side
{{{ 5+2 = -2+2 -6t -t }}}
So 7= 0 + 7t
And t=-1
Check
-1*(2-6) - (-1) = -(-4) - (-1) = 4+1 = 5