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Q: What is answer to 3x plus 3-x plus 13x-20?

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13x20=260260

No. It is 9x, which is a monomial.

3x + 2 = 3x + 6 This is not possible.

6x plus 8

3x plus 2y can be expressed mathematically as (3x + 2y).

3x + 11

4x2+3x+6+5x+3x+6 = 4x2+11x+12 when simplified

6x

3x-3x+4x^2+8x=4x^2+8x

The equivalent expression of 3x-9 plus 3x plus 5 is negative 4.

6x + 8

3x plus 9 equals what?

It is equivalent to: 3x+6+5 = 3x+11

=3x+7

50, 53, 59

The Abelian property or commutativity.

I think you mean (3x ± 1)^2 = (3x+1)(3x-1)?

3x + y

If this is algebra then; 3x plus 12x = 15x

-3x + 1

9x+3

The answer is y = -3x -4.

4x + 5 = 3x + 84x-3x + 5 - 5 = 3x - 3x + 8 -5x = 3

3x multiplied by (12x plus 9) is:3x(12x + 9)= (3x * 12x) + (3x * 9)= 36x2 + 27x

3x + 6y + 6x = 9x + 6y which can be factorised as 3(3x +2y)