Math Brackets Number brackets

# Number brackets

Number brackets are brackets that are a number with a certain sign. For example: $(-3)$.

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### Hint

You can omit the number bracket and the sign if the numbers are positive. For example: $(+4)=4$
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### Remember

When you expand number brackets,
• and you have the same signs, you put a plus sign
• next to each other.
• and you have different signs, you put a minus sign next to each other.

### Examples

#### same signs: $\color{green}{+}$

• $8\color{green}{+}(\color{green}{+}3)=8\color{green}{+}3$
• $9\color{red}{-}(\color{red}{-}3)=9\color{green}{+}3$
• #### different signs: $\color{red}{-}$

• $8\color{red}{-}(\color{green}{+}2)=8\color{red}{-}2$
• $7\color{green}{+}(\color{red}{-}3)=7\color{red}{-}3$