you’d start by distributing 3(x-7)
you’ll get: 5+x= 3x-21+6
then subtract 3x from both sides
you’ll have: 5+4x= -21+6
since we have like terms on our right side, we’ll combine them to get 5+4x= -15
we then subtract 5 from both sides to get:
4x= -20
lastly, we divide 4 from both sides to get x alone. we’ll end up getting: x= -5
answer: x = -5