SOLUTION: hi im in algebra honors and i thought i needed immediate help on solving linear systems my substitution.. for example i need help on 4.5x + 1.5y = 24 x-y=4 help me please? th

Algebra ->  Expressions-with-variables -> SOLUTION: hi im in algebra honors and i thought i needed immediate help on solving linear systems my substitution.. for example i need help on 4.5x + 1.5y = 24 x-y=4 help me please? th      Log On


   

Question 827946: hi im in algebra honors and i thought i needed immediate help on solving linear systems my substitution.. for example i need help on 4.5x + 1.5y = 24
x-y=4 help me please?
thank you.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
4.5x + 1.5y = 24
x - y = 4
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Eliminate fractions, multiply the 1st eqn by 2
9x + 3y = 48
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x - y = 4 --> x = y + 4
Sub for x in the 1st eqn
9(y+4) + 3y = 48
9y + 36 + 3y = 48
12y = 12
y = 1
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x = y+4
x = 5