x+5/2025 + x+4/2024 + x+3/2023 + x+2/2022 + x+1/2021 =5 (x+5/2025 - 1)+(x+4/2024 - 1)+(x+3/2023 - 1)+(x+2/2022 - 1)+(x+1/2021 - 1)=0 x-2020/2025 + x-2020/2024 + x-2020/2023 + x-2020/2022 + x-2020/2021=0 (x-2020)(1/2025 + 1/2024 + 1/2023 + 1/2022 + 1/2021)=0 <=>x-2020=0 x=2020