NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 1: Number System - Multiple Choice Questions
Question 13

Question.  13

\((-10)\times(-5)+(-7)\) is equal to

(a)

–57

(b)

57

(c)

–43

(d)

43

Detailed Answer with Explanation:

First, multiply. A negative × a negative gives a positive.

\((-10)\times(-5)=+50\)

Now add \(+50\) and \(-7\).

\(50+(-7)=50-7\)

\(=43\)

So, the value is \(43\). (Option d)

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NCERT Exemplar Solutions Class 7 – Mathematics – Unit 1: Number System – Multiple Choice Questions | Detailed Answers