Question 159303
9a+7b=-30
8b+5c=11
-3a+10c=73
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Rewrite as follows:
9a +7b +0=-30
0  +8b +5c=11
-3a+0  +10c=73
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Solve the system of equations by any method to get:
a= -1
b= -3
c= 7
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Cheers,
Stan H.