What is the answer to 87=19^x ?

The answer to 87=19^x is x=(ln(87))/(ln(19))

The solution is x=(ln(87))/(ln(19))

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87=19^x

87 = 1 9^{x}

x = \frac{ln ( 87 )}{ln ( 19 )}

Decimal Notation

x = 1.51672 \dots

Solution steps

87 = 1 9^{x}

Apply exponent rules

ln (87) = x ln (19)

Solve

ln (87) = x ln (19) : x = \frac{ln ( 87 )}{ln ( 19 )}

x = \frac{ln ( 87 )}{ln ( 19 )}

7^{x + 4} = 4 9^{2 x - 1}

12 5^{- 2 b} = 25

2^{x + 2} = 8

3 e^{2 x} - 4 = 0

7^{x} = (0.5)^{x - 1}