Which expression is equivalent to -1.3-(-1.9)? Choose 1 answer: (A) -1.9+1.3 (B) -1.3+(-1.9) (c) -1.3+1.9 (D) 1.3+1.9

Understand the problem: Understand the problem. We need to find an expression that is equivalent to -1.3 subtracting -1.9. In mathematics, subtracting a negative is the same as adding its positive counterpart.Apply the rule: Apply the rule for subtracting a negative number. -1.3 - (-1.9) is equivalent to -1.3 + 1.9 because subtracting a negative number is the same as adding the positive of that number.Check the answer choices: Check the answer choices to find the equivalent expression. (A) -1.9 + 1.3 is not equivalent because it switches the order of the numbers and does not change the sign of -1.9. (B) -1.3 + (-1.9) is not equivalent because it does not change the sign of -1.9. (C) -1.3 + 1.9 is equivalent because it correctly changes the sign of -1.9 to positive. (D) 1.3 + 1.9 is not equivalent because it changes the sign of both numbers, which is incorrect.

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Math Problems

Grade 7

Identify equivalent linear expressions I

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Q. Which expression is equivalent to

-1.3-(-1.9) ?

\newline

Choose

1

answer:

\newline

(A)

-1.9+1.3

\newline

(B)

-1.3+(-1.9)

\newline

(C)

-1.3+1.9

\newline

(D)

1.3+1.9

Understand the problem: Understand the problem. $\newline$ We need to find an expression that is equivalent to $-1.3$ subtracting $-1.9$ . In mathematics, subtracting a negative is the same as adding its positive counterpart.
Apply the rule: Apply the rule for subtracting a negative number. $\newline$ $-1.3 - (-1.9)$ is equivalent to $-1.3 + 1.9$ because subtracting a negative number is the same as adding the positive of that number.
Check the answer choices: Check the answer choices to find the equivalent expression. $\newline$ (A) $-1.9 + 1.3$ is not equivalent because it switches the order of the numbers and does not change the sign of $-1.9$ . $\newline$ (B) $-1.3 + (-1.9)$ is not equivalent because it does not change the sign of $-1.9$ . $\newline$ (C) $-1.3 + 1.9$ is equivalent because it correctly changes the sign of $-1.9$ to positive. $\newline$ (D) $1.3 + 1.9$ is not equivalent because it changes the sign of both numbers, which is incorrect.