Question

Subtract the sum of 3a(a-b +c) and 2b(a + b - c) from 7c(-a +b+c)​

Answer 1

Step-by-step explanation:

hope this answers help you

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Answer 2

Answer:

Step-by-step explanation:

3a^2-3ab+3ac+2ab+2b^2-2bc=3a^2-ab+3ac+2b^2-2bc

[7c(-a+b+c)=-7ac+7bc+7c^2]

now to subtract

-7ac+7bc+7c^2-(3a^2-ab+3ac+2b^2-2bc)

-7ac+7bc+7c^2-3a^2+ab-3ac-2b^2+2bc

-10ac+9bc+7c^2-2b^2+ab