SOLUTION: I am trying to solve by the elimination method. 0.3x-0.2y=4 0.2x+0.5y=-3

Question 327003: I am trying to solve by the elimination method.
0.3x-0.2y=4
0.2x+0.5y=-3
Answer by jvan(28) (Show Source): You can put this solution on YOUR website!
Through the elimination method, you can cancel out a variable. This will leave you with one variable in the equation. You can then solve the equation to find the value of the variable. Okay, lets start! =)
I will try to get rid of the x. I'll call equation #1, and equation #2. If we want to get rid of the x variable, we have to make sure the number in front of the x terms in the two equations are the same. Right now they both have different numbers in front of them. Multiply equation #1 by 2 and equation #2 by 3 to get and . Notice that now we have 0.6 in front of the x terms, perfect! ^0^ Lets subtract the second equation from the first: . That becomes . Divide both sides by -1.9 to get the y by itself: . You can pluy this back into either of the given equations to find x. I'll just choose equation #1 to plug into. It doesn't matter =) When we plug in y=-8.9, we get becomes. Solving for x gives you x= 7.4! Now that you have found that y=-8.9 and x=7.5, you are done!
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