The equations ax + b = 0 and cx + d = 0 are cosistent, if – McqOptions

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1.	The equations ax + b = 0 and cx + d = 0 are cosistent, if
A.	ad = bc
B.	ad + bc = 0
C.	ab - cd = 0
D.	ab + cd = 0
Answer» B. ad + bc = 0

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