समीकरण (x+3y=15) और (y=3) से (x) क्या होगा?

From (x+3y=15) and (y=3), what is (x)?

Explanation opens after your attempt
Correct Answer

B. (x=6)

Step 1

Concept

(x+9=15), so (x=6). After substitution, solve the remaining one-variable equation.

Step 2

Why this answer is correct

The correct answer is B. (x=6). (x+9=15), so (x=6). After substitution, solve the remaining one-variable equation.

Step 3

Exam Tip

(x+9=15), इसलिए (x=6)। प्रतिस्थापन के बाद शेष एक चर का समीकरण हल करें।

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Mathematics Answer, Explanation and Revision Hints

समीकरण (x+3y=15) और (y=3) से (x) क्या होगा? / From (x+3y=15) and (y=3), what is (x)?

Correct Answer: B. (x=6). Explanation: (x+9=15), इसलिए (x=6)। प्रतिस्थापन के बाद शेष एक चर का समीकरण हल करें। / (x+9=15), so (x=6). After substitution, solve the remaining one-variable equation.

Which concept should I revise for this Mathematics MCQ?

(x+9=15), so (x=6). After substitution, solve the remaining one-variable equation.

What exam hint can help solve this Mathematics question?

(x+9=15), इसलिए (x=6)। प्रतिस्थापन के बाद शेष एक चर का समीकरण हल करें।