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Find the sum : 2x + 5 and 5x + 7

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7x+11

7x+12

3x+5

4x+9

answer is B.

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Detailed Solution

The addition of these algebraic expressions are,

$\Rightarrow (2 x + 5) + (5 x + 7) \Rightarrow b y a d d i n g b o t h e x p r e s s i o n s w e g e t, \Rightarrow 2 x + 5 + 5 x + 7 = 7 x + 12$

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