Answer: hope it helps
Step-by-step explanation:
2x+11 absolute value equals 2x+11, then 2x+11=7, subtract 11 from itself, and 7 you get 2x=4 divide both sides by 2 an you get -2=x.
1g I think am not sure u didn't give a lot of information on this problem
487 + 310 ≈ 500 + 300 ≈ 800