Question

12х+х-14х; а-4а+9а; -6а+6а+4а; -4х+8х-х

Answer 1

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Answer 2

Пошаговое объяснение:

1)    12x+x-14x

       12x+1x-14x

        (12+1-14)x

        -1x

         -x

2)      a-4a+9a

         1a-4a+9a

          (1-4+9)a

         6a

3)        -6a+6a+4a

           4a

4)         -4x+8x-x

            -4x+8x-1x

            (-4+8-1)x

           3x

Answer 3

It looks like you've provided a series of mathematical expressions involving variables. I can help you simplify each expression step by step:

1. 12x + x - 14x: Combine the like terms: 12x + x - 14x = (12 + 1 - 14)x = -x.

2. a - 4a + 9a: Combine the like terms: a - 4a + 9a = (1 - 4 + 9)a = 6a.

3. -6a + 6a + 4a: Combine the like terms: -6a + 6a + 4a = (-6 + 6 + 4)a = 4a.

4. -4x + 8x - x: Combine the like terms: -4x + 8x - x = (-4 + 8 - 1)x = 3x.

So, after simplifying each expression, we have:

1. 12x + x - 14x = -x.
2. a - 4a + 9a = 6a.
3. -6a + 6a + 4a = 4a.
4. -4x + 8x - x = 3x.