х-(-4 1/3)=-5 2/3
х+4 1/3=-5 2/3
х=-5 2/3-4 1/3
х=-10
х-(-48 7/13)=-51 6/13
х+48 7/13=-51 6/13
х=-51 6/13-48 7/13
х=-100
х-(-4 1/3)=-5 2/3
х+4 1/3=-5 2/3
х=-5 2/3-4 1/3
х=-10
х-(-48 7/13)=-51 6/13
х+48 7/13=-51 6/13
х=-51 6/13-48 7/13
х=-100