Answer:
2x - 5
Step-by-step explanation:
Step 1: distribute the 1/5, or divide by 5
1/5 ( 10x-25)
2x - 5
Done
No, they are both incorrect by my understanding of your question use the Pythagorean theorem a^2 + b^2 =c^, therefore, 7^2 +x^2 = 13^2 or 49+x=169 then solve normally 169-49=120 √120 =5
The answer is 5
