Răspuns:
Explicație pas cu pas:
42=2x3x7
36=2²x3²
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cmmdc=2x3=6
40=2³x5
25=5²
----------------------
cmmdc=5
72=2³x3²
88=2³x11
----------------------
cmmdc=2³=8
108=2²x3³
270=2x3³x5
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cmmdc=2x3³=54
432=2⁴x3³
288=2⁵x3²
--------------------
cmmdc=2⁴x3²=144