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mrs_skeptik [129]
3 years ago
9

The lumberyard where you work sold a customer two boards . They measure 10 1/4 feet and 8 2/4 feet what is the total of the two

boards
Mathematics
2 answers:
Lelechka [254]3 years ago
7 0
If you add the two numbers, 10 +8 is 18.  The fractional parts are 1/4 and 2/4 which equals 3/4.  So the total length is 18 and 3/4 feet.
Vitek1552 [10]3 years ago
4 0
10 1/4 + 8 2/4 = 18 3/4 feet
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Step-by-step explanation:

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13x=-21-6y and -8x=36+6y
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Answer:

x=3\\y=-10

Step-by-step explanation:

13x=-21-6y\\-8x=36+6y

Let's take one of the equations and solve for x. I'll take the first one.

13x=-21-6y

Divide by 13.

x=\frac{-21-6y}{13}

Now replace x in the second equation.

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Distribute -8

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Break down the fraction.

\frac{168}{13}+\frac{48}{13}y=36+6y

Subtract \frac{168}{13}

\frac{48}{13}y=36+6y-\frac{168}{13}

Subtract 6y

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Combine like terms;

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Solve;

\frac{48-78}{13}y=\frac{468-168}{13}

Keep solving;

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Multiply by the negative reciprocal of the fraction next to y.

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On the right side; 13 and 13 become 1. 300/30 = 30/3 = 10

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After having found y, replace it in any of the equations to find x.

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