Question

-1⅘*(-15)= -1,95-8,68= -7-(-4)+3= 1⅛-3⅚=

Answer 1

Ответ:

-1 4/5*(-15) = -9/5*(-15) = 9*3 = 27

-1,95-8,68 = -(1,95+8,68) = -10,63

-7-(-4)+3=-7+4+3=0

1 1/8-3 5/6 = 9/8-23/6 =-65/24

Answer 2

To solve the expressions you provided:

1. -1⅘ * (-15): To multiply fractions, we multiply the numerators and denominators separately. In this case, we have: (-1⅘) * (-15) = (-9/5) * (-15) = 135/5 = 27

2. -1.95 - 8.68: When subtracting decimal numbers, align the decimal points and subtract as usual: -1.95 -8.68

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-10.63

3. -7 - (-4) + 3: Remember that subtracting a negative number is the same as adding a positive number. So we can rewrite the expression as: -7 + 4 + 3 = -3 + 3 = 0

4. 1⅛ - 3⅚: To subtract mixed numbers, we need to convert them into improper fractions: 1⅛ = (8/8 + 1/8) = 9/8 3⅚ = (6/6 + 3/6) = 9/6

Now, let's subtract the fractions: (9/8) - (9/6) To subtract fractions, we need to find a common denominator. The least common multiple (LCM) of 8 and 6 is 24. (9/8) * (3/3) - (9/6) * (4/4) 27/24 - 36/24 = -9/24

Simplifying the fraction: -9/24 can be reduced to -3/8.

Therefore, 1⅛ - 3⅚ is equal to -3/8.