Question

1) (-3 3/7 * 2 10/23 + 3 1/14) : 3 2/7 2) 4 - 5 3/8 * 2 2/3 - 5 1/2 : 1 1/2 3) 3 1/4 * (-3) + 1,2 : (-0,1) + 0,7 * 1,2

Answer 1

У меня так получилось
Если что не правильно написала , пиши )

Answer 2

1) 3 2/3
2) -3
3) 0,84

Answer 3

Let's solve each of these mathematical expressions step by step:

1. (-3 3/7 * 2 10/23 + 3 1/14) : 3 2/7

First, let's simplify the mixed numbers and fractions:

-3 3/7 = -24/7 2 10/23 = 56/23 3 1/14 = 43/14 3 2/7 = 23/7

Now, substitute these values into the expression:

((-24/7) * (56/23) + (43/14)) / (23/7)

Now, perform the calculations within the parentheses:

= (-1344/161) + (43/14) / (23/7)

Now, divide by the fraction:

= (-1344/161) + (43/14) * (7/23)

Now, multiply the fractions:

= (-1344/161) + (301/161)

Now, add the fractions:

= (-1344/161) + (301/161) = -1043/161

2. 4 - 5 3/8 * 2 2/3 - 5 1/2 : 1 1/2

Let's simplify the mixed numbers and fractions:

5 3/8 = 43/8 2 2/3 = 8/3 5 1/2 = 11/2 1 1/2 = 3/2

Now, substitute these values into the expression:

4 - (43/8) * (8/3) - (11/2) : (3/2)

Now, perform the calculations within the parentheses:

= 4 - (86/24) - (11/2) : (3/2)

Now, divide by the fraction:

= 4 - (86/24) - (11/2) * (2/3)

Now, multiply the fractions:

= 4 - (86/24) - (22/3)

To subtract a fraction, we need a common denominator. The common denominator for 24 and 3 is 24:

= 4 - (86/24) - (176/24)

Now, subtract the fractions:

= (96 - 86 - 176) / 24 = (-166) / 24 = -83/12

3. 3 1/4 * (-3) + 1.2 : (-0.1) + 0.7 * 1.2

Let's simplify the mixed number and fractions:

3 1/4 = 13/4

Now, substitute these values into the expression:

(13/4) * (-3) + 1.2 : (-0.1) + (0.7) * 1.2

Perform the calculations:

= (-39/4) + 1.2 : (-0.1) + 0.84

Now, divide by the decimals:

= (-39/4) + 12 : (-1) + 0.84

Now, add and subtract:

= (-39/4) + 12 - 1 + 0.84 = (48 - 39 - 4 + 84) / 4 = 89 / 4 = 22.25

So, the solutions to the given expressions are:

1. -1043/161
2. -83/12
3. 22.25