SOLUTION: I need to solve using the addition method 3x � 2.5y = 7.125 2.5x � 3y = 7.3125

Question 319519: I need to solve using the addition method

3x � 2.5y = 7.125
2.5x � 3y = 7.3125

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I need to solve using the addition method
3x � 2.5y = 7.1250
2.5x � 3y = 7.3125
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Multiply each equation by 10 to get rid of coefficient decimals.
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30x - 25y = 71.250
25x - 30y = 73.125
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Multiply thru 1st by 5
Multiply thru 2nd by 6
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150x - 125y = 356.25
150x - 180y = 438.75
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Subtract 2nd from 1st and solve for "y"
55y = -82.5
y = -1.5
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Substitute that value into one of the equations and solve for "x":
Cheers,
Stan H.
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