What is the answer to 3.3x+3^2x=90 ?

The answer to 3.3x+3^2x=90 is x= 300/41

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3.3x+3^2x=90

3.3 x + 3^{2} x = 90

x = \frac{300}{41}

Decimal Notation

x = 7.31707 \dots

Solution steps

3.3 x + 3^{2} x = 90

3^{2} = 9

3.3 x + 9 x = 90

Add similar elements:

3.3 x + 9 x = 12.3 x

12.3 x = 90

Multiply both sides by

10

123 x = 900

Divide both sides by

123

x = \frac{300}{41}

- \frac{22}{15} x + \frac{1}{3} = - \frac{2}{3} + \frac{1}{5}

x, \frac{1}{2} x + \frac{1}{3} y = 9

0 = 2 + 8 x

x, (x - 1) \cdot (y + 2) = 11

x, 4 x - 5 y = 9