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Answer:
1 ans is 7/15
2 ans is 2
3 ans is 35
1) To find the reciprocal of we need to convert it to improper fraction.
So the reciprocal of is .
2) -2 + (-8) ÷ (-4)
BODMAS ⇒ Division
(-8) ÷ (-4) = 2
Negative integer divided by another negative integer gives a positive integer. So thats why the answer here is 2.
BODMAS ⇒ Addition
-2 + (-2) = 0
3) x ÷ (-7) = (-5)
x = (-5) × (-7)
x = 35
4) 0.8 - 0.13
0.80 - 0.13 = 0.67