Computer Science, asked by grudraksh820, 8 days ago

solve the equation 2x =5y + 4 ; 3x - 2y = 16 by cross multiplication method.​

Answers

Answered by cheshtakabra12399
2

Answer:

x =  - 8 \\ y =  \frac{ - 20}{11}

Explanation:

 \frac{x}{b1c2 - (c1b2)}  =  \frac{y}{a1c2 - (c1a2)}  =  \frac{1}{a1b2 - (b1a2)}

 \frac{x}{5( - 16) - (4 \times  - 2)}  =  \frac{y}{ - 2 \times  - 16 - (4 \times 3)}  =  \frac{1}{ - 2 \times  - 2 - ( 5\times 3)}

 \frac{x}{80 + 8}  =  \frac{y}{32 - 12}  =  \frac{1}{ - 11}

 \frac{x}{88}  =  \frac{y}{20}  =  \frac{ - 1}{11}

let  \frac{x}{88}  =   \frac{ - 1}{11}  \\ x =   \frac{ - 88}{11}  \\ x =  - 8

let \:  \frac{y}{20}  =  \frac{ - 1}{11}  \\ y =  \frac{ - 20}{11}

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