3x + 2y = 4
8x + 5y = 9
Linear Equation
By cross multiplication method
Answers
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.
Step-by-step explanation:
3x + 2y = 4
8x + 5y = 9
Linear Equation
By cross multiplication method