Answer:
630 milliliters
Step-by-step explanation:
Total water in the watering can = 980 milliliters
Water used to water the plants = x millimeters
Water left in the can = 350 milliliters
Total water in the watering can = Water used to water the plants + Water left in the can
980 = x + 350
980 - 350 = x
x = 630 milliliters
Water used to water the plants = 630 milliliters
Fraction used = Water used to water the plants / Total water in the watering can
= 630 milliliters / 980 milliliters
= 63/98
= 9/14