Question

СРОООООЧНО ДАЮ 25 БАЛЛОВ

ЗАПОЛНИТЕ ОТВЕТАМИ НА МЕСТА знака ( ? )
A=10 7/10
B=3 1/5
A + B = ?
A-B=?


A=9 3/7
B=?
A + B =14 2/21
A - B =?


A=15 9/10
B=?
A + B = ?
A - B = 2 3/100


A=?
B=4 3/5
A+B= 23
A - b =?


a=5 7/20
b= 3 3/10
a + b = ?
a - b =?

a=?
b= 1 5/8
a+ b = ?
a-b=6 3/4

a =4 3/10
b=?
a+b=7 3/5
a-b =?

ЖДУ ХОРОШЕГО ОТВЕТА , ЗАРАНЕЕ ОГРОМНОЕ СПАСИБО ! ! !

Answer 1

Ответ:

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1) A + B = $10\frac{7}{10} + 3\frac{1}{5} = 10\frac{7}{10} + 3\frac{2}{10} = 13\frac{9}{10} = 13,9$

A - B = $10\frac{7}{10} - 3\frac{1}{5} = 10\frac{7}{10} - 3\frac{2}{10} =7\frac{5}{10} = 7,5$

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2) $9\frac{3}{7}$ + B = $14\frac{2}{21}$

$9\frac{9}{21}$ + B = $14\frac{2}{21}$

B = $4\frac{13}{21}$

A - B = $9\frac{9}{21}$ - $4\frac{13}{21}$ = $4\frac{17}{21}$

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3) $15\frac{9}{10} - B = 2\frac{3}{100}$

$15\frac{90}{100} - B = 2\frac{3}{100}$

B = $13\frac{87}{100}$

$15\frac{90}{100} + 13\frac{87}{100} = 29\frac{77}{100}$

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4) A + $4\frac{3}{5}$ = 23

$A + 4\frac{3}{5} = 22\frac{5}{5}$

A = $18\frac{2}{5}$

$18\frac{2}{5} - 4\frac{3}{5} = 13\frac{4}{5} = 13,8$

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5) $5\frac{7}{20} + 3\frac{3}{10} = 9$

$5\frac{7}{20} - 3\frac{3}{10} = 2\frac{4}{10} = 2,4$

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6) A - $1\frac{5}{8} = 6\frac{3}{4}$

$A - 1\frac{5}{8} = 6\frac{6}{8}$

A = $7\frac{11}{8}$ = $8\frac{3}{8}$

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7) $4\frac{3}{10} + B = 7\frac{3}{5}$

$4\frac{3}{10} + B = 7\frac{6}{10}$

B = $3\frac{3}{10} = 3,3$

$4\frac{3}{10} - 3\frac{3}{10} = 1$

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