Question 982406
1/2 x + 1/3 y = -3/10
1/2 x +4 y = 45/2
Solve by substitution
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1st:: Get rid of the denominators::
15x + 10y = -9
x + 8y = 45
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Solve for "x"::
x = 45-8y
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Substitute for "x" and solve for "y"::
15(45-8y) + 10y = -9
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15*45-110y = -9
y = (15*45+9)/110
y = 342/55
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Solve for "x":
x = 45-8[342/55]
x = -261/55
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Check the answers
15x + 10y = -9
15(-261/55)+10(342/55) = -9
-9 = -9
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Cheers,
Stan H.
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