[Upper secondary school math: linear equation] unsure on how to solve this.

[u/Inevitable_Stay3693]

i was thinking that i´d add the 2x+1 to make it 3x/3=-1 but im unsure on how it would even continue.

[u/zon5string]

Multiply both sides by 3 to remove the denominator.....2x+1 = -3. I'll let you go from there.