Question

1075. Выполните вычитание: a) 10-(-3); ж) 2,5-8,5; 6) 12-(-14); 3) 0-(-40,6); B) -21-(-19); и) 0-64,8; r) 9-(-9); к) —7,62—(—7,62); р) - J) -0,21-0; A) -1,4-1,4; e) -5,6-(-3,1); M) -3-0,75; ")-(-): 12 2 о) — -3; ; 9 n) - 15 2 15 15 - ( - 1/1/1); -(-1); 15 c) -13 -1; 8 +) 1 1-2 1 T) 1 11 22​

Answer 1

Ответ:

а) 13

б) 16

в) -2

г) 18

д) -2,8

е) -2,5

ж) -6

з) 40,6

и) -64,8

к) 0

л) -0,21

м) -4

н) 1/2

о) -10/9

п) -1/3

р) 1/3

с) -13/8

т) -13/22

Пошаговое объяснение:

а)

$10 - ( - 3) = 10 + 3 = 13$

б)

$12 - ( - 4) = 12 + 4 = 16$

в)

$- 21 - ( - 19) = - 21 + \\ + 19 = - 2$

г)

$9 - ( - 9) = 9 + 9 = 18$

д)

$- 1.4 - 1.4 = - 2.8$

е)

$- 5.6 - ( - 3.1) = - 5.6 + \\ + 3.1 = - 2.5$

ж)

$2.5 - 8.5 = - 6$

з)

$0 - ( - 40.6) = 0 + 40.6 = \\ = 40.6$

и)

$0 - 64.8 = - 64.8$

к)

$- 7.62 - ( - 7.62) = \\ = - 7.62 + 7.62 = 0$

л)

$- 0.21 - 0 = - 0.21$

м)

$- 3 \frac{1}{4} - 0.75 = \\ = - \frac{13}{4} - 0.75 = \\ = - 3.25 - 0.75 = \\ = - 4$

н)

$\frac{5}{12} - ( - \frac{1}{12} ) = \\ = \frac{5}{12} + \frac{1}{12} = \\ = \frac{5 + 1}{12} = \frac{6}{12} = \\ = \frac{6 \times 1}{6 \times 2} = \frac{1}{2}$

о)

$- \frac{4}{9} - \frac{2}{3} = \\ = - \frac{4}{9} - \frac{3 \times 2}{3 \times 3} = \\ = - \frac{4}{9} - \frac{6}{9} = \\ = \frac{ - 4 - 6}{9} = \\ = - \frac{10}{9}$

п)

$- \frac{7}{15} - ( - \frac{2}{15} ) = \\ = - \frac{7}{15} + \frac{2}{15} = \\ = \frac{ - 7 + 2}{15} = \\ = - \frac{5}{15} = - \frac{5 \times 1}{5 \times 3} = \\ = - \frac{1}{3}$

р)

$- \frac{2}{15} - ( - \frac{7}{15} ) = \\ = - \frac{2}{15 } + \frac{7}{15} = \\ = \frac{ - 2 + 7}{15} = \\ = \frac{5}{15} = \frac{5 \times 1}{5 \times 3} = \\ = \frac{1}{3}$

с)

$- 1 \frac{3}{8} - \frac{1}{4} = \\ = - \frac{11}{8} - \frac{1}{4} = \\ = - \frac{11}{8} - \frac{2 \times 1}{2 \times 4} = \\ = - \frac{11}{8} - \frac{2}{8} = \\ = \frac{ - 11 - 2}{8} = \\ = - \frac{13}{8}$

т)

$1 \frac{6}{11} - 2 \frac{3}{22} = \\ = \frac{17}{11} - \frac{47}{22} = \\ = \frac{2 \times 17}{2 \times 11} - \frac{47}{22} = \\ = \frac{34}{22} - \frac{47}{22} = \\ = \frac{34 - 47}{22} = \\ = - \frac{13}{22}$