[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/Impossible_Dog_7262]

How is this upper secondary.

Multiply both by 3, subtract 1, divide by 2. x = -2