What is the answer to 3x-8x+9x=12-7x ?

The answer to 3x-8x+9x=12-7x is x= 12/11

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3x-8x+9x=12-7x

3 x - 8 x + 9 x = 12 - 7 x

x = \frac{12}{11}

Decimal Notation

x = 1.09090 \dots

Solution steps

3 x - 8 x + 9 x = 12 - 7 x

Add similar elements:

3 x - 8 x + 9 x = 4 x

4 x = 12 - 7 x

Move

7 x

to the left side

11 x = 12

Divide both sides by

11

x = \frac{12}{11}

x, x + 3 y = - 5

- 3 - (2 x - 1) = x + 1

\frac{( x + 1 )}{4} = \frac{3}{2}

4 n - 2 = - 2 (n + 7)

x, 5 x - 4 y = 10