SOLUTION: how do you solve b=4a+80 and b=1/2a+10

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Question 707305: how do you solve b=4a+80 and b=1/2a+10
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
solve b=4a+80 and b=1/2a+10
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Substitute and solve for "a":
4a+80 = (1/2)a + 10
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3.5a = -70
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a = -20
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Solve for "b":
b = (1/2)a + 10
b = (1/2)(-20) + 10
b = -10 + 10
b = 0
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Cheers,
Stan H,
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