How do you find $a - 2b + 3c$ diminished by $a - 2b - 3c + d$ ?

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Answer 1 · 2015-06-19T18:33:17

$(a-2b+3c)-(a-2b-3c+d) = 6c-d$

$(a-2b+3c)-(a-2b-3c+d)$

$=a-2b+3c-a+2b+3c-d$

$=a-a-2b+2b+3c+3c-d$

$=(1-1)a+(-2+2)b+(3+3)c-d$

$=6c-d$

How do you find a - 2b + 3ca - 2b + 3c diminished by a - 2b - 3c + da - 2b - 3c + d?