What is the answer to x+6x=21+15+3x ?

The answer to x+6x=21+15+3x is x=9

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x+6x=21+15+3x

x + 6 x = 21 + 15 + 3 x

x = 9

Solution steps

x + 6 x = 21 + 15 + 3 x

Add similar elements:

x + 6 x = 7 x

7 x = 21 + 15 + 3 x

Add the numbers:

21 + 15 = 36

7 x = 3 x + 36

Move

3 x

to the left side

4 x = 36

Divide both sides by

4

x = 9

33 + 33

\frac{3}{5} (5 x + 10) = - 24

x^{2} + 6 x - 40

2 x^{2} + x (- \frac{x}{2}) + (- \frac{x}{2})^{2} = 4

3 ln (10) + 2 ln (100)