Final answer:
To write 2.125 as a fraction, multiply it by a power of 10 to eliminate the decimal and simplify the resulting fraction.
Step-by-step explanation:
To write 2.125 as a fraction, we can set up the following equation:
2.125 = x / 1
Multiply both sides of the equation by a power of 10 to eliminate the decimal:
2.125 * 1000 = x
2125 = x
Therefore, 2.125 as a fraction is 2125/1000.