-4/1.6 + -4/6.11 +…..+ -4/2021.2026 giải nhanh giúp minh vớiii

Report
Question

Please briefly explain why you feel this question should be reported.

Report
Cancel

-4/1.6 + -4/6.11 +…..+ -4/2021.2026
giải nhanh giúp minh vớiii

Answers ( 1 )

  1. Please briefly explain why you feel this answer should be reported.

    Report
    Cancel

    Đáp án+Giải thích các bước giải:

    `-4/(1.6) + (-4)/(6.11) + …+ (-4)/(2021.2026)`

    `= -4/5 . ( 5/(1.6) + 5/(6.11) + … + 5/(2021 . 2026 ) )`

    `= -4/5 . ( 1 – 1/6 + 1/6 – 1/11 + … + 1/2021 – 1/2026 )`

    `= -4/5 . ( 1 – 1/2026 )`

    `= -4/5 . 2025/2026`

    `= -810/1013`

Leave an answer

Browse

By answering, you agree to the Terms of Service and Privacy Policy.