Well first you have to make the denominators equal by finding a common denominator. in this case 21, but whatever you do to the bottom you do to the top. so 1/3 times 7/7 equals 7/21 and 1/7 times 3/3 equals 3/21.
so how many 7/21 cups of ice cream can you make from 3/21 i think about none but remember i could be wrong
1/18 as a decimal is 0.055555555555556 because you divide one by eighteen and get that number.
Hope this helped!
The Martin family can drive 99 miles using 3 gallons of gas
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