Math, asked by islam546, 2 months ago

3x + 2y = 4

8x + 5y = 9

Linear Equation
By cross multiplication method

Answers

Answered by Ehsanul885

5

Answer:

Answer vlaue of x is -2 and value of y is 5.

Step-by-step explanation:

SOLUTION

Given,

3x + 2y = 4

8x + 5y = 9

Find,

the value of x and y.

(By multiplication method)

SO,

Formula of x is = b1c2 - b2c1

——————

a1b2 - a2b1

a1 = 3. | b1 = 2. | c1 = -4

a2 = 8. | b2 = 5. | c2 = -9

-18 -(-20)

=> x = —————

15 - 16

-18 + 20

=> x = —————

15 - 16

2

=> x = —

-1

=> x = -2

Formula of y is = a2c1 - a1c2

——————

a1b2 - a2b1

-32 - 27

=> y = —————

15 - 16

-5

=> y = —

-1

=> y = 5

Hence,

the value of x is -2 and value of y is 5.

Answered by lum56

1

Step-by-step explanation:

3x + 2y = 4

8x + 5y = 9

Linear Equation

By cross multiplication method

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