Can you write an equivalent fraction for 5/9 and 1/10 using the least common denominator?

Yes

Step-by-step explanation:  

Rewriting input as fractions if necessary:

5/9, 1/10

For the denominators (9, 10) the least common multiple (LCM) is 90.

LCM(9, 10)

Therefore, the least common denominator (LCD) is 90.

Calculations to rewrite the original inputs as equivalent fractions with the LCD:

5/9=5/9×10/10=50/90

1/10=1/10×9/9=9/90

answer is

c) 4

step-by-step explanation: