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Mathematics, 02.12.2021 01:50 ladypink94

Solve the unknowns of 140a-50b-30c=80...eqn1). -50a+100b-40c=70...eqn2).
-30a-40b+90c=0...eqn3).

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Solve the unknowns of 140a-50b-30c=80...eqn1). -50a+100b-40c=70...eqn2).
-30a-40b+90c=0...eqn3)...

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