Maths / Linear Equations in Two Variables / Cross Multiplication Method

QUESTION
 

Which of the following values of x and y represents the solution of the pair of equations large {a_1x+b_1y-c_1=0 ;and ;a_2x+b_2y-c_2=0}  ?

OPTIONS
A. 

large x=frac{b_2c_1-b_1c_2}{a_1b_2+a_2b_1} , y= frac{c_1a_2-c_2a_1}{a_1b_2-a_2b_1}

B. 

dpi{120} fn_jvn large x=frac{b_2c_1-b_1c_2}{a_2b_1+a_1b_2} y = frac{c_2a_1-c_1a_2}{a_1b_2-a_2b_1}

C. 

large x= frac{b_2c_1-b_1c_2}{a_1b_2-a_2b_1} ,y =frac{c_2a_1-c_1a_2}{a_1b_2-a_2b_1}

D. 

None of these

Right Option : C

EXPLANATION
Explain TypeExplanation Content
Text

By using Cross Multiplication method in large {a_1x+b_1y-c_1=0 ;and ;a_2x+b_2y-c_2=0} 

Then large x= frac{b_2c_1-b_1c_2}{a_1b_2-a_2b_1} ,y =frac{c_2a_1-c_1a_2}{a_1b_2-a_2b_1}

 

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