Question

subtract a-3b+5c and 2a-3c+b​

Answer 1

2a-3c+b-(a-3b+5c)

=2a-3c+b-a+3b-5c

=a+4b-8c

Answer 2

${\huge {\bold {\purple {\underline{Solution}}}}}$

Let X=2a(a−3b+5c)

Y=5a(2a−3c+b)

$\bf\pink{According\:to\: the\: question}$

Y−X

⇒5a(2a−3c+b)−2a(a−3b+5c)

⇒10a2−15ac+5ab−2a2+6ab−10ac

⇒8a2−25ac+11ab

$\bf\green{Hence,\:this\:is\:the\: answer.}$