SOLUTION: Please help me solve this system using the method of substitution. I would like the steps to know how it's done. Thank you.
.5x+2.2y=9
6x+.4y=22
Question 560930: Please help me solve this system using the method of substitution. I would like the steps to know how it's done. Thank you.
.5x+2.2y=9
6x+.4y=22 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 5x+2.2y=9
6x+.4y=22
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Solve the 1st for "x":
x = (9-2.2y)/5
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Substitute for "x" and solve for "y":
6[(9-2.2y)/5] + 0.4y = 22
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(54 - 13.2y)/5 + 0.4y = 22
Multiply thru by 5 to get:
54-13.2y + 2y = 110
-11.2y = 56
y = -5
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Solve for "x":
x = (9-2.2y)/5
x = (9-2.2*-5)/5
x = 4
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Cheers,
Stan H.
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