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Popular >

7^8+7^9=8*7^x

Solution

7^{8} + 7^{9} = 8 \cdot 7^{x}

Solution

x = 8

Solution steps

7^{8} + 7^{9} = 8 \cdot 7^{x}

Switch sides

8 \cdot 7^{x} = 7^{8} + 7^{9}

Divide both sides by

8

7^{x} = \frac{7 ^{8} + 7 ^{9}}{8}

Simplify

7^{x} = 5764801

Apply exponent rules

x = 8

Popular Examples

mn = a^{x}

7^{x+1}+7^{1-x}=50

7^{x + 1} + 7^{1 - x} = 50

solvefor x,y^x=5 solve for

x, y^{x} = 5

solvefor x,y^x=2 solve for

x, y^{x} = 2

2^{2 x - 1} = 64

Frequently Asked Questions (FAQ)

What is the answer to 7^8+7^9=8*7^x ?
The answer to 7^8+7^9=8*7^x is x=8
Solve for x: 7^8+7^9=8*7^x
The solution is x=8