Question 9.

Solve the following simultaneous equation.

49x – 57y = 172; 57x – 49y = 252

Answer:

Adding both the Equations

Dividing both sides by 106

…(III)

Subtract equation (I) and (II)

Divide both sides by (–8)

…(IV)

Equating Eq. (III) and (IV)

Substituting x=7 in Eq. IV

∴ solution is (x, y) = (7,3)

MATHS I SSC NEW SYLLABUS

Chapter No. 1. Linear Equations in Two Variables

Chapter No. 2. Quadratic Equation

Chapter No. 3: Arithmetic Progression

Chapter 4: Financial Planning.

CHAPTER NO. 5. PROBABILITY

Chapter No. 6: STATISTICS

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