Question

help.. answer all of them​

Answer 1

Answer:

7no=5 8no=8 9no= 945 10no= -218

Answer 2

$\huge\mathbb{SOLUTION}$

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Question 7

-(-2)+(-4)+7

-(-2)+(-4)+72-4+7 = 1

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Question 8

-1-(-21)+(-12)

-1+21-12 = -1 +9 = 8

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Question 9

(-27)×[(-16)+(-19)]

-27[-16-19]

-27×(-35)

945

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Question 10

(-241)+49+(-21)+22-27

-241+49-21-5

-192-26

-218

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NOte:-

same sign = addition

opposite sign = subtraction