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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता ९ वी

Solve the following simultaneous equation. x + y = 11 ; 2x - 3y = 7 - Algebra

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प्रश्न

Solve the following simultaneous equation.

x + y = 11 ; 2x - 3y = 7 

बेरीज
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उत्तर

x + y = 11     ...(I)

2x - 3y  = 7     ...(II)

Multiply (I) with 3

3x + 3y = 33      ...(III)

Adding (II) and (III)

2x - 3y = 7
3x + 3y = 33
+                  
5x = 40

x = `40/5`

⇒ x = 8

Putting the value of x in (I)

8 + y = 11

y = 11 - 8

⇒  y = 3 

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पाठ 5: Linear Equations in Two Variables - Problem Set 5 [पृष्ठ ९१]

APPEARS IN

बालभारती Mathematics 1 [English] Standard 9 Maharashtra State Board
पाठ 5 Linear Equations in Two Variables
Problem Set 5 | Q (2) (iii) | पृष्ठ ९१

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