(-3a+b)+(4a-3b)

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(-3a+b)+(4a-3b)(-3a+b)+(4a-3b)(-3a+b)+(4a-3b)3a+5b+(2a-b)-(4a-3b)=3a+5b+2a-b-4a+3b=3a+2a-4a+5b-b+3b=

(-3a+b)+(4a-3b)
(-3a+b)+(4a-3b)

(-3a+b)+(4a-3b)
3a+5b+(2a-b)-(4a-3b) =3a+5b+2a -b-4a+3b =3a+2a-4a+5b-b+3b =a+7b 3a+5b+(2a-b)-(4a-3b) =3a+5b+2a-b-4a+3b =