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Question

Solve for a: 3(a+4)+5(a+2)=14


A

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B

1

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C

-1

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D

-2

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Solution

The correct option is C

-1


Given 3(a+4)+5(a+2)=14

3a+12+5a+10=14 [Removing the brackets]

[rearranging the terms]

3a+5a+12+10=14

8a+22=14

8a=1422 [when +22 is transposed to RHS it becomes -22]

8a=8

[dividing both terms by 8]

8a8=a=88=1

a=1


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