Answer:
option C ( 12 , -1) .
Step-by-step explanation:
Given : x − 2y = 14 ; x + 3y = 9 .
To find : Solve the following system of equations:
x − 2y = 14 --------equation (1)
(-) x +(-) 3y = (-)9 --------equation (2)
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- 5y = 5 ( on subtracting equation (1) and (2) )
On dividing by -5 both side we get,
y = -1 .
On substituting y = -1 in equation (1).
x - 2(-1) = 14.
x + 2 = 14.
On subtracting by 2 both side
x = 14-2 = 12
x = 12.
( 12 , -1)
Therefore , option C ( 12 , -1) .
