What is the answer to 7^y=15 ?

The answer to 7^y=15 is y=(ln(15))/(ln(7))

The solution is y=(ln(15))/(ln(7))

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7^y=15

7^{y} = 15

y = \frac{ln ( 15 )}{ln ( 7 )}

Decimal

y = 1.39166 \dots

Solution steps

7^{y} = 15

Apply exponent rules

y ln (7) = ln (15)

Solve

y ln (7) = ln (15) : y = \frac{ln ( 15 )}{ln ( 7 )}

y = \frac{ln ( 15 )}{ln ( 7 )}

- 9 = - 10 + 28 (\frac{19}{28})^{x}

3^{2 x} - 3 (3^{x}) = 4

3^{x + 1} = 9^{x - 2}

\frac{A}{1 + B e ^{\frac{t}{2}}} = C

lo g_{2} (2^{x}) = x