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ankoles [38]
3 years ago
10

A mom bought her kids 3 cartons of milk for $1.25 each and 6 doughnuts. The total cost was $6.90. Write an equation to determine

the cost of a doughnut.
Mathematics
1 answer:
spayn [35]3 years ago
7 0

$6.90 = 6d - ($1.25 x 3)

Donuts = d



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\tt Step-by-step~explanation:

To solve for n, we have to isolate n. To do so, we move all the terms that are not n to one side of the equation, and leave n on the other side.

\tt Steps:

Equation: n + 5/16 = -1

Subtract 5/16 on both sides to bring it to the right side of the equation.

\tt n+5/16-5/16=-1-5/16\\\\n=-\frac{21}{16}~or~-1\frac{5}{16}

\Large\boxed{\tt Our~final~answer:~n=-\frac{21}{16}~or~-1\frac{5}{16} }

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Distance = Speed*Time

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