Question

1 13/90-5,3= 1/30-5/6-18,9-2,2-25,3= -(-7 1/16)-5 3/4 + 1 1/8= 10 5/8 -12 4/4-(-0,035-0,04)=?

Answer 1

1 34
2 69
3 947
4. 56,76

Answer 2

Let's break down each of these calculations step by step:

1. 1 13/90 - 5.3 To subtract a mixed number from a decimal number, convert the mixed number to a decimal and then perform the subtraction:

1 13/90 - 5.3 = 1.1444 - 5.3 = -4.1556

2. 1/30 - 5/6 - 18.9 - 2.2 - 25.3 To subtract these fractions and decimals, you can first find a common denominator for the fractions (in this case, 30), then convert the decimals to fractions:

1/30 - (5/6 * 5/5) - (189/10) - (22/10) - (253/10)

Now, find a common denominator (30) and subtract:

1/30 - 25/30 - 567/30 - 66/30 - 253/30

Now, subtract the fractions:

(1 - 25 - 567 - 66 - 253) / 30 = (-910) / 30 = -91/3

So, 1/30 - 5/6 - 18.9 - 2.2 - 25.3 = -91/3

3. -(-7 1/16) - 5 3/4 + 1 1/8 To simplify this expression, first deal with the double negative:

-(-7 1/16) = 7 1/16

Now, add the fractions:

7 1/16 - 5 3/4 + 1 1/8

Now, subtract the mixed numbers:

(7 - 5 - 1) + (1/16 - 3/4 + 1/8) = 1 1/16 - 2/4 - 12/16

Now, find a common denominator for the fractions:

1 1/16 - 8/16 - 12/16

Now, subtract the fractions:

(1 - 8 - 12) / 16 = (-19) / 16 = -19/16

So, -(-7 1/16) - 5 3/4 + 1 1/8 = -19/16

4. 10 5/8 - 12 4/4 - (-0.035 - 0.04) First, simplify the mixed numbers:

10 5/8 = 10 10/16 = 10 5/4

12 4/4 = 12

Now, calculate the subtraction and the negative values:

(10 5/4) - 12 - (-0.035 - 0.04) = (10 5/4) - 12 - (-0.075)

Now, subtract:

(10 - 12) + (5/4) + 0.075 = -2 + 5/4 + 0.075

Now, find a common denominator for the fraction:

-2 + 5/4 + 75/100 = -2 + 25/20 + 75/100

Now, add the fractions:

-2 + 5/4 + 3/4 = -2 + 8/4 = -2 + 2 = 0

So, 10 5/8 - 12 4/4 - (-0.035 - 0.04) = 0

I hope this helps!