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Va rog repedeeeeeeeeeeeeee​

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Răspuns :

c. 921-[(621-438)x 5 -169 x 4]=

    921-(183 x 5 -676)=

    921-(915-676)=

    921-239=

    682

d. {36+[8 x(900-862)]}x 7-148=

    [36+(8 x 38)]x7-148=

    (36+304)x7-148=

    340 x 7-148=

    2380-148=

    2232