Question 828288
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I will solve one, and you solve the other using the same method.
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x = Venkat
y = Raju
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x = 2y
x = y + 3
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put the system of linear equations into standard form:
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x - 2y = 0
x - y = 3
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solution:
x = Venkat = 6
y = Raju = 3
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system matrix
1 -2
1 -1
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inverse of system matrix
-1 2
-1 1
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determinant of system matrix = 1
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I will setup the second problem:
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x = Peter
y = brother
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x + y = 15
x - y = 3
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NOTE:
x - y = 3
this equation assumes that Peter is older than his brother, but the problem statement doesn't tell us either way which brother is the older, so we must guess who is the older. I chose Peter as the older.
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Solve quadratic equations, quadratic formula:
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Solve systems of linear equations up to 6-equations 6-variables:
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