<PRE><B>Question 825611</B>
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x + y + z = 24
z = 7
5x + 10y + 25z = 290
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x nickels = 11
y dimes = 6
z quarters = 7
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system matrix
1 1 1
0 0 1
5 10 25
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inverse of system matrix
2 3 -0.2
-1 -4 0.2
0 1 0
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determinant of system matrix = -5
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Solve and graph linear equations:
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Solve quadratic equations, quadratic formula:
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Solve systems of linear equations up to 4-equations 4-variables:
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