from the sum of 14a 12b 12c and - 12a 14b 16c subtract 16a -18b -12c
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Step-by-step explanation:
from the sum of 14a 12b 12c and - 12a 14b 16c subtract 16a -18b -12c
= (14a+12b+12c) + (-12a+14b+16c)
= 14a+12b+12c-12a+14b+16c
= 2a+26b+28c
now subtract 16a -18b -12c
= (2a+26b+28c)-(16a -18b -12c)
= 2a+26b+28c-16a+18b+12c
= -14a+44b+40c
so answer is -14a+44b+40c.
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