Question

1,write the successor of-5 and predecessor of 6 then add them

2,find the value of a-b if a and b are two integers such that a is the predecessor of b
3,subtract the sum of 100and -24 from the sum of 42 and -66​

Answer 1

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Step by Step Solution for Part-1:

We know that:

• The successor of a number defines one to be added to a number
• The predecessor of a number defines one being subtracted to a number

Solution:

• ⇒ (-5 + 1) + (6 - 1)
• ⇒ (-4) + (5)
• ⇒ 1

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Step by Step Solution for Part-2:

We know that:

• b - 1 = a
• To solve: a - b

Solution:

• ⇒ a - b
• ⇒ (b - 1) - b
• ⇒ (-b + 1) + b
• ⇒ -b + 1 + b
• ⇒ 1

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Step by Step Solution for Part-3:

• (42 - 66) - (100 - 24)
• => (-24) - (76)
• => -100

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Answer 2

#1

• Successor of -5=-4
• Predecessor of 6=5

`\\ \tt\hookrightarrow -4+5=1`

#2

• Let one be x and other be x-1

`\\ \tt\hookrightarrow a-b=x-x+1=+1`

#3

`\\ \tt\hookrightarrow 42-66-(100-24)`

`\\ \tt\hookrightarrow -24-76`

`\\ \tt\hookrightarrow -100`