5/9:(1/11-5/22)+5/9:(1/15-2/3)

5/9:(1/11-5/22)+5/9:(1/15-2/3)

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  1. `5/9÷(1/11-5/22)+5/9÷(1/15-2/3)`

    `=5/9÷(2/22-5/22)+5/9÷(1/15-10/15)`

    `=5/9÷(-3)/22+5/9÷(-9)/15`

    `=5/9×(-22)/3+5/9×(-15)/9`

    `=(5×(-22))/(9×3)+(5×(-15))/(9×9)`

    `=(-110)/27+(-75)/81`

    `=(-330)/81+(-75)/81`

    `=(-225)/81`

    CHÚC BẠN HỌC TỐT!!!

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