To convert the repeating decimal 0.46 (where the 6 repeats indefinitely) into a fraction, follow these steps:
Step 1: Set Up the Equation
Let x equal the repeating decimal:
x = 0.466666...
Step 2: Eliminate the Repeating Part
To isolate the repeating part, multiply both sides of the equation by 10:
10x = 4.66666...
Step 3: Subtract the Original Equation
Now, subtract the original equation from this new equation:
10x - x = 4.66666... - 0.46666...
This simplifies to:
9x = 4.2
Step 4: Solve for x
Now, divide both sides by 9:
x = 4.2 / 9
Step 5: Convert to Fraction
To express 4.2 as a fraction, note that 4.2 is the same as 42/10. Therefore:
x = (42/10) / 9 = 42 / 90
Step 6: Simplify the Fraction
Now, simplify 42/90 by finding the greatest common divisor (GCD), which is 6:
This gives us:
x = 7/15
Final Result
Thus, the repeating decimal 0.46 repeating can be expressed as the fraction 7/15.