SOLUTION: Solve the equations
A) 3a-3b=5
3-a=-2b
B)x/2++y/4=-1/4
2x-y=2+y-x
C)0.01x=0.12-0.04y
2x=4(3-2y) inconsistent systems
D) x=-3y+6
2x+6y=12 dependant systems
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Question 172829: Solve the equations
A) 3a-3b=5
3-a=-2b
B)x/2++y/4=-1/4
2x-y=2+y-x
C)0.01x=0.12-0.04y
2x=4(3-2y) inconsistent systems
D) x=-3y+6
2x+6y=12 dependant systems
Answer by EMStelley(208) (Show Source): You can put this solution on YOUR website!
I will do A) for you and that should help.
I am a fan of the addition method, so I will go with that. I first need to make the second equation look like the first by adding 2b to both sides and subtracting 3 from both sides.
So our two equations are now
Now, notice that if I multiply the second equation by 3, that the a's will add up to 0.
Now, add the two together:
To find a, you plug in b=-4/3 into either equation. I will use the first.
So the solution is a=1/3, b=-4/3, or (1/3, -4/3).
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