Luis had 9/10 of a gallon of paint. He used 1/5 to paint his bathroom and 1/4 to paint his kitchen. How much paint remains?

9/20 remains

Step-by-step explanation:

We want to convert all the demoninaters to 20 so we can subtract them.

9/10 = 18/20   1/5 = 4/20 1/4 = 5/20  4/20 + 5/20 = 9/20 18/20 - 9/20 = 9/20

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9/20 paint remains or 0.45

Step-by-step explanation:

First, you have to make all of the with a common denominator (100)

Next, you subtract how much paint he has minus the paint he used

90/100 minus (20/100 add 25/100)

Then, add like terms, 20/100 add 25/100 equals 45/100

Finally, subtract the total paint from the beginning and the paint he used and simplify

90/100 minus 45/100 equals 45/100 equals 9/20

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answer:  

step-by-step explanation:

odd numbers are only divisible by 1 and itself.

even numbers are divisible by more than 1 and itself.

for example 6 is even because it is divisible by more than 1 and its self. 1 x 6= 6 ; 2 x 3= 6

and 7 is odd because only 7 x 1 equals seveb