Question

simplify only check

Answer 1

Question 18: 5

Question 19: -4

Question 20: -17

Answer 2

All wrong

Answer 3

@NatalieLove ques18
- mod(-7-3+1) = -mod (-10+1) = - mod(-9)
as modulus of a number is always positive
therefore - 9 would be an answer

Answer 4

@NatalieLove try to solve 19 and 20
write the full solution here {whatever u r getting} so that ur mistakes can be rectified

Answer 5

- | -7 - 3 + 1 |
A negative minus anything is basically just adding the two numbers together and keeping the answer negative.
- | -10 + 1 |
A negative plus anything is basically just subtracting it.
- | -9 |
Absolute value signs take away the negative sign inside, leaving the other outside of it.
-9

3 - | 2 - 8 + 1 |
Two minus eight is negative six.
3 - | -6 + 1 |
Negative six plus one is negative five.
3 - | -5 |
The absolute value signs cancel out the negative inside, so it's left with three minus five.
3 - 5
Three minus five is negative two.
-2

Do the stuff inside the absolute value brackets first.
-2 | -4 - 5 | - | 4 - 10 |
Negative four minus five is negative nine. Four minus ten is negative six.
-2 | -9 | - | -6 |
The absolute value brackets cancel out the negative with the nine and six, leaving them positive. You put a plus sign in front of the nine because it is positive. The reason you don't change the minus sign into a plus sign with the six is because there was already a subtraction sign there.
-2 + 9 - 6
Negative two plus nine is seven.
7 - 6
Seven minus six is one.
1

Answer 6

I get confused with the lines in between

Answer 7

In mine?

Answer 8

no in other problems similar to the ones u did

Answer 9

The | | ?

Answer 10

yes

Answer 11

so I do the does first is like parenthesis

Answer 12

So, what it means is, once you solve everything inside those(I call them absolute value brackets), no matter what you got, even if it's a negative, the absolute value brackets always makes the number positive. And yeah, you do what's inside the absolute value brackets first, like parenthesis.

Answer 13

alright got it Thank You

Answer 14

Yep. You're welcome.