Answer: You can always multiply numerator and denominator by the same number without changing the value of the fraction. To change 7 to 28 you multiply by 4. To keep the value 2/7 unchanged, multiply by 4/4, giving 8/28. Blank is 8.
Explanation:
Answer:
0.010
2/7=0.285
0.285/28= 0.010
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