Answer:
(exact form) or 107.5 (decimal form) or
(mixed number form)
Explanation:
Isolate the variable to get the answer.
![2x+4-12=207](https://img.qammunity.org/2020/formulas/mathematics/middle-school/wfqdz0xh1ht2sa7jr5ew3ud87gadv33r2p.png)
Add 12 to both sides to get the equation.
![2x+4=219](https://img.qammunity.org/2020/formulas/mathematics/middle-school/t6qesgnoq4t2n8nj9sraifffisa36zo7db.png)
Subtract 4 from both sides to get the equation.
![2x=215](https://img.qammunity.org/2020/formulas/mathematics/middle-school/uc49a5advwdwl3xruryfy5mab6auhphxp2.png)
Divide both sides by two to get the answer.
![x=215/2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/4ceoo4q7s99f2yywrmyzyvt4ejofopqa6n.png)