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Step-by-step explanation:
1. successor of -10 = -10 + 1
= a) -9
2. b) 1 lies to the right of 0
3. b) 1, 0, -1, -2
4. two numbers = -615 , -67
= -615 - (-67)
= -615 + 67 [ here sign - and - multiplies and result is + ]
= -548
5. attached file
6. 3415 x 512 - (512 x 415) using distributive property
= 512 ( 3415 + -415 )
= 512 x 3000
= 15,36,000
7. (-20) x (-1) + (-28)/7 [ BODMAS first we must divide]
= -20 x -1 + -4 [ then multiply], here - x - becomes +
= 20 + -4
= 16
8. Mount everest elevation= 29,028
Dead sea elevation = 1,312
difference= 27,716
9.sahara = 136'F
gobi = -50"F
difference = 136 - (-50) [ - x - = +]
=136+ 50
= 186
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