Question

4 3/5: (1 2/3 -3 1/5)+ 1 3/8

Answer 1

-1 ⅝
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Answer 2

Ответ:2 9/40

Пошаговое объяснение:

1) 3 1/5-1 2/3= 16/5 - 5/3=48/15-25/15=23/15=1 8/15

2)4 3/5:1 8/15=23/5-23/15=69/15-23/15=43/15=2 13/15

3)2 13/15+1 3/8=134/120+53/120=187/120=2 27/120=2 9/40

Answer 3

To solve this expression, we need to simplify the terms inside the parentheses first, and then add the result to 1 3/8.

Let's start by subtracting the second mixed number from the first one:

1 2/3 - 3 1/5

To do this, we need to find a common denominator. The smallest common multiple of 3 and 5 is 15.

1 2/3 = 5/3 3 1/5 = 16/5

Multiplying the numerator and denominator of 5/3 by 5, we get:

5/3 = 25/15

Multiplying the numerator and denominator of 16/5 by 3, we get:

16/5 = 48/15

Now we can subtract:

25/15 - 48/15 = -23/15

So, the expression inside the parentheses simplifies to -23/15.

Now we can add this result to 1 3/8. Again, we need to find a common denominator. The smallest common multiple of 15 and 8 is 120.

1 3/8 = 11/8

Multiplying the numerator and denominator of -23/15 by 8, we get:

-23/15 * 8 = -36.8/120

Now we can add:

11/8 + (-36.8/120) = 98/60 - 36.8/120

Simplifying the fractions, we get:

98/60 - 46/150 = 147/75 - 46/150

To simplify this further, we need to find a common denominator:

147/75 = 294/150 46/150 = 46/150

Now we can subtract:

294/150 - 46/150 = 248/150

So the final answer is 248/150, which can be simplified to 124/75.