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Zarrin [17]
2 years ago
15

What’s the expression 1/8+2/5

Mathematics
1 answer:
Lerok [7]2 years ago
8 0

Answer:

The answer is 21/40

Step-by-step explanation:

(1×5)+(2×8)8×5

=5+16/40

=21/40

Have a blessed day :)

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3 years ago
Sam received a 15 percent tip for delivering pizzas. If the cost of the pizzas was $247.62, what was the total amount he collect
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3 years ago
Solve the following using the elimination method and write the value of x.
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Answer:

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3 years ago
Find the sum of <br> -6 1/8+1 1/4
Vlad [161]

Answer:

\large\boxed{-4\dfrac{7}{8}=-4.875}

Step-by-step explanation:

To add two fractions, they must have the same denominator.

LCD = 8

1\dfrac{1}{4}=1\dfrac{1\cdot2}{4\cdot2}=1\dfrac{2}{8}

-6\dfrac{1}{8}+1\dfrac{1}{4}=-6\dfrac{1}{8}+1\dfrac{2}{8}=-\left(6\dfrac{1}{8}-1\dfrac{2}{8}\right)=(*)\\\\\text{We know}\ 1=\dfrac{8}{8},\ 6=5+1=5+\dfrac{8}{8}=5\dfrac{8}{8}.\\\\\text{Therefore}\ 6\dfrac{1}{8}=5\dfrac{8+1}{8}=5\dfrac{9}{8}\\\\(*)=-\left(5\dfrac{9}{8}-1\dfrac{2}{8}\right)=-\bigg((5-1)+\dfrac{9-2}{8}\bigg)=-\bigg(4+\dfrac{7}{8}\bigg)=-4\dfrac{7}{8}

You can convert the fractions to the decimals.

6\dfrac{1}{8}=8.125\\\\1\dfrac{1}{4}=1.25\\\\-6\dfrac{1}{8}+1\dfrac{1}{4}=-6.125+1.25=1.25-6.125=-4.875

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