Understand the operation: Understand the operation. We need to subtract -7 from -7, which is written as -7 - (-7).Subtracting a negative: Subtracting a negative is the same as adding a positive. Rewrite the subtraction of a negative number as the addition of a positive number. -7 - (-7) becomes -7 + 7.Perform the addition: Perform the addition. We are adding -7 and +7, which are opposite numbers. -7 + 7 equals 0 because when you add a number and its opposite, the result is always zero.

Grade 7

Add, subtract, multiply, and divide integers

Full solution

Q. Subtract.

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-7-7=

Understand the operation: Understand the operation. $\newline$ We need to subtract $-7$ from $-7$ , which is written as $-7 - (-7)$ .
Subtracting a negative: Subtracting a negative is the same as adding a positive. $\newline$ Rewrite the subtraction of a negative number as the addition of a positive number. $\newline$ $-7 - (-7)$ becomes $-7 + 7$ .
Perform the addition: Perform the addition. $\newline$ We are adding $-7$ and $+7$ , which are opposite numbers. $\newline$ $-7 + 7$ equals $0$ because when you add a number and its opposite, the result is always zero.