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3 years ago

How to do 15 1/2 - 2 1/10 how to do it

Mathematics

1 answer:

lisov135 [29]3 years ago

8 0

First, you need to make the fractions have the same denominator:

15 1/2 ---> 15 + (1/2 x 5) = 15 5/10

2 1/10 ---> 2 1/10

Then you need to subtract them from each other:

15 5/10

- 2 1/10 (or) 15 5/10 - 2 1/10 = 13 4/10

13 4/10

This gets the answer: 13 4/10

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Step-by-step explanation:

We use systems of equations in two variables to solve this problem.

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Now we write a similar equation for car B which travels 5 miles further than car A and does it in 32 minutes:

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Now we solve for $d_A$ in this last equation and make the substitution in the equation for car A:

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4 years ago