№1095
1) -0,2
2) 39,5
3) -25,5
4) -12,9 + 8,9 = -4
[tex]5) \frac{7}{8} - 1 = \frac{7 - 8}{8} = \frac{ - 1}{8} = - \frac{1}{8} [/tex]
[tex]6) - \frac{2}{9} - 3 = - \frac{ 2+27 }{9} = - \frac{29}{9} = - 3 \frac{2}{9} [/tex]
[tex]7) - \frac{13}{3} + 5 \frac{1}{3} = - \frac{13}{3} + \frac{16}{3} = \frac{ - 13 + 16}{3} = \frac{3}{3} = 1[/tex]
[tex]8)2 \frac{5}{9} + 1 \frac{4}{9} = (2 + 1) + ( \frac{5}{9} + \frac{4}{9} ) = 3 + \frac{5 + 4}{9} = 3 + \frac{9}{9} = 3 + 1 = 4[/tex]
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Answers & Comments
№1095
1) -0,2
2) 39,5
3) -25,5
4) -12,9 + 8,9 = -4
[tex]5) \frac{7}{8} - 1 = \frac{7 - 8}{8} = \frac{ - 1}{8} = - \frac{1}{8} [/tex]
[tex]6) - \frac{2}{9} - 3 = - \frac{ 2+27 }{9} = - \frac{29}{9} = - 3 \frac{2}{9} [/tex]
[tex]7) - \frac{13}{3} + 5 \frac{1}{3} = - \frac{13}{3} + \frac{16}{3} = \frac{ - 13 + 16}{3} = \frac{3}{3} = 1[/tex]
[tex]8)2 \frac{5}{9} + 1 \frac{4}{9} = (2 + 1) + ( \frac{5}{9} + \frac{4}{9} ) = 3 + \frac{5 + 4}{9} = 3 + \frac{9}{9} = 3 + 1 = 4[/tex]