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negative variable MCQ Questions for Class 10

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2 questions tagged with negative variable.

Question 1/2 Easy Mathematics Pair of Linear Equations in Two Variables Algebraic methods: Substitution method and Elimination method. Class 10 Level 57

यदि (3x-y=18) और (x=7), तो (y) का मान क्या होगा?

If (3x-y=18) and (x=7), what will be the value of (y)?

Explanation opens after your attempt
Correct Answer

C. (y=3)

Step 1

Concept

Putting (x=7) gives (21-y=18), so (y=3). Watch the signs while solving a negative variable.

Step 2

Why this answer is correct

The correct answer is C. (y=3). Putting (x=7) gives (21-y=18), so (y=3). Watch the signs while solving a negative variable.

Step 3

Exam Tip

(x=7) रखने पर (21-y=18), इसलिए (y=3)। ऋण चर को हल करते समय चिन्हों का ध्यान रखें।

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Question 2/2 Easy Mathematics Pair of Linear Equations in Two Variables Algebraic methods: Substitution method and Elimination method. Class 10 Level 55

यदि (2x-y=8) और (x=5), तो (y) का मान क्या है?

If (2x-y=8) and (x=5), what is the value of (y)?

Explanation opens after your attempt
Correct Answer

B. (y=2)

Step 1

Concept

Putting (x=5) gives (10-y=8), so (y=2). Change the sign correctly when moving a negative variable.

Step 2

Why this answer is correct

The correct answer is B. (y=2). Putting (x=5) gives (10-y=8), so (y=2). Change the sign correctly when moving a negative variable.

Step 3

Exam Tip

(x=5) रखने पर (10-y=8), इसलिए (y=2)। ऋण चर को दूसरी तरफ ले जाते समय चिन्ह बदलें।

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