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Serjik [45]
4 years ago
7

_6. ifx-12 = -15, find the value of 4-X

Mathematics
1 answer:
melisa1 [442]4 years ago
8 0

First find the value of "x", by isolating/getting the variable "x" by itself in the equation:

x - 12 = -15   Add 12 on both sides to get "x" by itself in the equation

x - 12 + 12 = -15 + 12

x = -3    

Now that you found the value of x, you can use it to find the value of 4 - x

4 - x        Substitute/Plug in -3 for "x"

4 - (-3)    [two negative signs cancel each other out and become positive]

4 + 3

7         The value of 4 - x is 7

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D

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The solution is B. In each equation, it uses parenthesis to group operations. On the left, each pair repeats one number either 1.6 and 4.2. On the right is written the reduced form by writing the expression with a greatest common factor.

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