If 6(a - b) = 216 and 6(a + b) = 7,776, what is the value b? – McqOptions

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1.	If 6(a - b) = 216 and 6(a + b) = 7,776, what is the value b?
A.	630
B.	480
C.	390
D.	210
Answer» B. 480

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