Determine o MDC nos seguintes casos:
a) MDC ( 24,30,40) = c) MDC ( 5,25, 3) =
b) MDC ( 21,28,42) = d) MDC ( 140, 135 ) =
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a) 24 = 2 x 2 x 2 x 3
30 = 2 x 3 x 5
40 = 2 x 2 x 2 x 5
MDC (24,30,40) = 2
b) 21 = 3 x 7
28 = 2 x 2 x 7
42 = 2 x 3 x 7
MDC (21, 28, 42) = 7
c) 5 = 5 [primo]
25 = 5 x 5
3 = 3 [primo]
MDC (5, 25, 3) = Ø
d) 140 = 2 x 2 x 5 x 7
135 = 3 x 3 x 3 x 5
MDC (140, 135) = 5
30 = 2 x 3 x 5
40 = 2 x 2 x 2 x 5
MDC (24,30,40) = 2
b) 21 = 3 x 7
28 = 2 x 2 x 7
42 = 2 x 3 x 7
MDC (21, 28, 42) = 7
c) 5 = 5 [primo]
25 = 5 x 5
3 = 3 [primo]
MDC (5, 25, 3) = Ø
d) 140 = 2 x 2 x 5 x 7
135 = 3 x 3 x 3 x 5
MDC (140, 135) = 5
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