Those lines mean absolute value which always positive.
|-3| + 7 could be re-written as 3 + 7
|-3 + 7| could be re-written as 3 + 7
3 is the common difference
128 mm is the corrrect but not corre I by score u should.
Its a rectangle with a height of 12.8 and a width of 2.4
Answer: the answer would be 3 7/12
Step-by-step explanation:
First you must find the common denominator(which is 12) and then add the fractions