2x + 3y = 7
3x+4y =12
Solve by
by elimination Method
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Step-by-step explanation:
2x+3y=7-------(1)
3x+4y=12-------(2)
(1)×3=>6x+9y=21
(2)×2=>6x+8y=24
(-) (-) (-)
--------------------------
y= -3
putting the value of y in equation (1) we get
2x+3y=7
=>2x+3×(-3)=7
=>2x-9=7
=>2x=7+9
=>2x=16
=>x=16/2
=>x=8
so x=8
y= -3
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