Question

fill in the blanks. 1. (-72) +(____) =-72. b. (-27+15) +(-55)=(-27)+(15+(___).c. 53 + (- 45) =(-45) + (_____). d. - (-75)=______.​

Answer 1

Answer:

1. 0

2. -55

3. 53

4. 75

Step-by-step explanation:

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Answer 2

Answer:

1. 0

b. -15

c. 53

d. 75

Step-by-step explanation:

1. anything added to 0 gives the same number

similarly when we add 0 to -72 we get -72

b. this question uses the associative property which means changing the grouping of numbers does not change their sum

so, when -27 and 15 are grouped and in the second case 15 is to be grouped,so in the dash we put the number missing which  is -15

c. thus question uses commutative property which means displacement of numbers does not change their sum.so 53 + -45  =  -45+53

d. as we know that when we multiply - and - we get plus. so  the answer will be plus