Question

Evaluate -9 - (-4).

that would be 5 right?

Answer 1

It would be -4 you distribute that minus sign into the parenthesis (hopefully you know that negative*negative = positive) and you have -9+5= -4

Answer 2

excuse me I accidentally put -4 when i should have put -5 sorry :p

Answer 3

Heres a visual
-9-(-4)
-9+4
-5

Answer 4

Thank you very much for correcting me and for your explanation.

Answer 5

No problem have a nice day! Make sure to close the question.

Answer 6

Evaluate (5 + 2)2 - 40 + 3 = __________.
do you mind helping me with this one. I don't understand algebra?

Answer 7

`(1) 2 negative signs become a plus.` \(\large\color{black}{ \displaystyle \color{red}{\rm a}-(-\color{blue}{\rm b})=\color{red}{\rm a}+\color{blue}{\rm b} }\)
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`(2) When you combine numbers, the sign goes after the greater number.`

(for example)

\(\large\color{black}{ \displaystyle \color{red}{\rm 6}-\color{blue}{\rm 4}=2}\) or \(\large\color{black}{ \displaystyle -\color{blue}{\rm 4}+\color{red}{\rm 6}=2}\)
and on the other hand,
\(\large\color{black}{ \displaystyle \color{red}{\rm 4}-\color{blue}{\rm 6}=-2}\) or \(\large\color{black}{ \displaystyle -\color{blue}{\rm 6}+\color{red}{\rm 4}=-2}\)
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Answer 8

For (5 + 2)2 - 40 + 3 = you start by working out the parenthesis first. What is the sum in the parenthesis? (5+2)

Answer 9

7 and 41

Answer 10

Stay with the parenthesis! So you have (7)2-40
(7)2 is multiplication which always comes before addition and subraction so what is 7*2?

Answer 11

14

Answer 12

correct! Now what is 14-40?

Answer 13

26

Answer 14

wrong, remember that there is a bigger number being subtracted from a smaller number so its going to be negative

Answer 15

The answer would be -26

Answer 16

oh no I forgot to put the negative sign. yes it should be -26.

Answer 17

There you go. Some other people need some help so have a nice day :D

Answer 18

you do the same :). thanks again!