найдите неизвестное уменьшаемое x-(-4 1/3)=-5 2/3; x-(-48 7/13)=-51 6/13

х-(-4 1/3)=-5

х+4 1/3=-5

х=-5-4 1/3

х=-9 1/3

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х-(-48 7/13)=-51 6/13

х+48 7/13=-51 6/13

х=-51 6/13-48 7/13

х=-100