Question

Помогите 2 и 3 срочно

Answer 1

Ответ:

Пошаговое объяснение:

a) 7/10 + 5/8 = 35/40 + 25/40 = 60/40 = 3/2 = 1ц. 1/2

б) 2 11/12 + 1 1/4 = 2 11/12 + 1 3/12 = 3ц. 14/12 = 3ц. 7/6 = 4ц. 1/6

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a) 7/12 - 3/8 = 14/24 - 9/24 = 5/24

б) 3 4/9 - 1 2/3 = 3 4/9 - 1 6/9 = 1ц. 7/9

Answer 2

2)

a)

$\frac{7}{ 10} + \frac{5}{8} = \frac{56 + 50}{80} = 1 \frac{26}{80} = 1 \frac{13}{40}$

b)

$3 \frac{11 + 3}{12} = 4 \frac{1}{6}$

3)

a)

$= \frac{7 \times 2 - 3 \times 3}{24} = \frac{14 - 9}{24} = \frac{5}{24}$

b)

$= 3 \frac{4}{9} - 1 \frac{6}{9} =1 \frac{9 + 4 - 6}{9} = 1 \frac{7}{9}$