Asked by erin

evaluate:-[a-3b],if a= -2 and b= 6

-[-2-18]
-[20]
20 correct? these are absolute bars by the way.

No, not correct. |-20| is 20. Put a minus sign in front of it and you have -20. The error is made going from line 2 to line 3.

but absolute is never negative

There is a minus sign OUTSIDE of the absolute value signs. It reverses the sign of the absolute value term, making it negative.

an absolute value can never be negative

Answers

Answered by Anonymous
C+(-c)=8

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