Which expression is equivalent to 13-(-21)? Choose 1 answer: (A) 13+21 (B) -13+21 (c) -21-13 (D) -21+13

Understand Negative Subtraction: Understand the operation of subtracting a negative number. Subtracting a negative number is the same as adding its positive counterpart. Calculation: 13 - (-21) = 13 + 21Perform Addition: Perform the addition. Now we simply add the two positive numbers. Calculation: 13 + 21 = 34Match Result: Match the result with the given choices. The calculation from Step 2 matches choice (A) 13 + 21.

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Which expression is equivalent to
13-(-21)?
Choose 1 answer:
(A)
13+21
(B)
-13+21
(c)
-21-13
(D)
-21+13

Which expression is equivalent to $13-(-21) ?$ $\newline$ Choose $1$ answer: $\newline$ (A) $13+21$ $\newline$ (B) $-13+21$ $\newline$ (C) $-21-13$ $\newline$ (D) $-21+13$

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Math Problems

Grade 7

Identify equivalent linear expressions I

Full solution

Q. Which expression is equivalent to

13-(-21) ?

\newline

Choose

1

answer:

\newline

(A)

13+21

\newline

(B)

-13+21

\newline

(C)

-21-13

\newline

(D)

-21+13

Understand Negative Subtraction: Understand the operation of subtracting a negative number. Subtracting a negative number is the same as adding its positive counterpart. Calculation: $13 - (-21) = 13 + 21$
Perform Addition: Perform the addition. $\newline$ Now we simply add the two positive numbers. $\newline$ Calculation: $13 + 21 = 34$
Match Result: Match the result with the given choices. $\newline$ The calculation from Step $2$ matches choice (A) $13 + 21$ .