Question

If A = -(2x + 3), B = -3(x – 2) and C = -2x + 7. Find the value of k if (A + B + C) = kx.​

Answer 1

Step-by-step explanation:

$a = - (2x + 3) \\ b = - 3(x - 2) \\ c = - 2x + 7 \\ \\ \\ = > (a + b + c) = - (2x + 3) -3(x - 2) + 2x + 7 \\ = > (a + b + c) = - 2x - 3 - 3x + 6 - 2x + 7$

$= > - 2x - 3x - 2x - 3 + 6 + 7 \\ = > = - 7x -$

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Answer 2

Answer:

-7

Step-by-step explanation:

A + B + C = -(2x + 3) - 3(x - 2) - 2x + 7

A + B + C = -2x - 3 - 3x + 6 - 2x +7

A + B + C = -7x + 10 = kx

Therefore,  

k = -7

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