first you need to find the least common denominator which in this case it is 40. since 5 and 8 both go into 40.
5/8 = 25/40
3/5 = 24/40
25/40 - 24/40 =1/40
does this make sense to you?
Answer:



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Step-by-step explanation:
Given
--- perimeter


Required
Possible dimension of different parallelogram
The perimeter is calculated as:

So,we have:

Divide by 2

Since l and w must be positive integers, the possible dimensions are:



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Answer:
-1 + 2 = 1
1 + (-2) = -1
-1 - 2 = -3
1 - (-2) = 3
Step-by-step explanation
When you subtract use keep change change
Rule 1 when you add : If the signs are the same add the numbers and take the sign of the bigger number.
Rule 2 when you add : If the signs are different subtract the numbers and take the sign of the bigger number.
I wanted to help you understand and i hope i did that!