Question

Subtract: (5abc – 18a2

bc) from (20abc + 12ab2

c – 4a2

bc)




please tell answer with method I can give like and 5 star​

Answer 1

Answer:

15abc+12ab²+c+14a²

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Answer 2

Answer:

(20abc+12ab2c-4a2bc) - (5abc-18a2bc)

First we must omit the brackets; if + then signs will non change; if - then signs will be the opposite.

= 20abc+12ab2c-4a2bc-5abc+18a2bc

Then we must arrange the combining like terms.

= 20abc-5abc +12ab2c -4a2bc+18a2bc

Then the normal calculations.

= 15abc + 12ab2c + 14a2bc

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