Solve the substitution simultaneous equation x+3y=0 and x-3y=6
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Answer:
y=-9/2 , x= -15/2
Step-by-step explanation:
x+3y=0 ⇒x+3=y ⇒x=y-3
x-3y=6
substitute x in equation 2,
x-3y=6
⇒ y-3-3y = 6
⇒ -2y-3= 6
⇒-2y= 9
⇒ y=-9/2
substitute y in any of the equation to get x,
x=y-3
⇒ x= -9/2-3
⇒ x= -15/2
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