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Question

Adding (14ab – 8b – 20a) to (20ab + 14b + 12a) will give

A
6ab + 22b + 32a
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B

34ab - 6b + 8a

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C
34ab + 6b - 8a
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Solution

The correct option is C 34ab + 6b - 8a

(14ab – 8b – 20a) + (20ab + 14b + 12a)

Step1:
Open the brackets.

= 14ab – 8b – 20a + 20ab + 14b + 12a

Step2:
Rearrange the like terms.

= (12a - 20a) + (14b - 8b) + (14ab + 20ab)

Step3:
Add the like terms.

= - 8a + 6b + 34ab


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