Answer:
Both fraction have a common denominator.
Thus, Length of plant increases in one week

and Length of plant increases in next week
.
Explanation:
Given : Length of plant increases in one week

also, Length of plant increases in next week

Equivalent fraction are fractions having same value, even though they may look different.
Here, we have to use a common denominator to write an equivalent fraction.
Thus, multiply the denominator and numerator by 2 of the length of plant increases in next week that is,


Thus, both fraction have a common denominator.
Thus, Length of plant increases in one week

and Length of plant increases in next week
.