Question

УМОЛЯЮ ПОЖАЛУЙСТА!! 1) -54+82+(-17)+(-38)+21= 2) 4+(-8)-(-19)-(-15)-40= 3)5 7/8 + (-3 5/12) - (-1 7/16)=

Answer 1

Ответ:

1) -6

2) -10

Пошаговое объяснение:

1) -54+82+(-17)+(-38)+21= -6

2) 4+(-8)-(-19)-(-15)-40= -10

3) 3 43/48

Answer 2

1) -54 + 82 + (-17) + (-38) + 21 =

To solve this expression, we can first combine the like terms:

-54 + 82 = 28 28 + (-17) = 11 11 + (-38) = -27 -27 + 21 = -6

Therefore, -54 + 82 + (-17) + (-38) + 21 = -6.

2) 4 + (-8) - (-19) - (-15) - 40 =

Again, let's combine the like terms:

(-8) - (-19) = -8 + 19 = 11 (-15) - 40 = -55

Now, we can simplify further:

4 + 11 - (-55) = 4 + 11 + 55 = 70

Therefore, 4 + (-8) - (-19) - (-15) - 40 = 70.

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

First, let's simplify the expressions within the parentheses:

(-3 + 5/12) = -3 + 5/12 = -36/12 + 5/12 = -31/12 (-1 + 7/16) = -1 + 7/16 = -16/16 + 7/16 = -9/16

Now, we can combine the like terms:

5 + 7/8 - 31/12 + 9/16

To add or subtract fractions, we need a common denominator. In this case, the least common multiple of 8, 12, and 16 is 48. So, let's convert all the fractions to have a denominator of 48:

5 = 5 * 48/48 = 240/48 7/8 = 7 * 6/48 = 42/48 -31/12 = -31 * 4/48 = -124/48 -9/16 = -9 * 3/48 = -27/48

Now, we can add or subtract the fractions:

240/48 + 42/48 - 124/48 + (-27/48) = (240 + 42 - 124 - 27)/48 = 131/48

Therefore, 5 + 7/8 + (-3 + 5/12) - (-1 + 7/16) = 131/48.