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Popular >

9*3^{y-1}-3^y=18

Solution

9 \cdot 3^{y - 1} - 3^{y} = 18

Solution

y = 2

Solution steps

9 \cdot 3^{y - 1} - 3^{y} = 18

Factor

9 \cdot 3^{y - 1} - 3^{y} : 2 \cdot 3^{y}

2 \cdot 3^{y} = 18

Divide both sides by

2

3^{y} = 9

Apply exponent rules

y = 2

Popular Examples

36^{3x+4}=7776^{-2}

3 6^{3 x + 4} = 777 6^{- 2}

7^{x} - 7^{1 - x} = 6

sqrt(27^{x+2)}=729

2 7^{x + 2} = 729

1 = 2^{y}

2^{n} = n^{2}

Frequently Asked Questions (FAQ)

What is the answer to 9*3^{y-1}-3^y=18 ?
The answer to 9*3^{y-1}-3^y=18 is y=2
Solve for y: 9*3^{y-1}-3^y=18
The solution is y=2