Write Equation Given: Write down the equation given in the problem.We are given the equation 25x=21−x16.
Recognize Power of 2: Recognize that 16 can be written as a power of 2. 16 is 2 raised to the power of 4, so we can rewrite the equation as 25x=21−x24.
Combine Powers of 2: Use the property of exponents to combine the powers of 2 on the right side of the equation.When dividing like bases with exponents, we subtract the exponents: 25x=24−(1−x).
Simplify Exponent: Simplify the exponent on the right side of the equation. 25x=24−1+x which simplifies to 25x=23+x.
Set Exponents Equal: Since the bases are the same and the equation is an equality, the exponents must be equal.Set the exponents equal to each other: 5x=3+x.
Solve for x: Solve for x.Subtract x from both sides to get 5x−x=3, which simplifies to 4x=3.Then divide both sides by 4 to get x=43.
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