Answer:
28.
Step-by-step explanation:
1) the range of x is: 2x-7>0; ⇔ x>3.5.
2) the solution is:
[tex]\sqrt{2x-7}=7;[/tex]
2x-7=49;
2x=56; ⇔ x=28 (28>3.5, belongs to the range of x above).
