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3 years ago

13

What is an expression for the calculation 2/3 times the sum of 2/8 and 4/8?

1 answer:

Naily [24]3 years ago

8 0

2/3((2/8)+(4/8))
For the 2/8 + 4/8 you wouldn't need the extra set of parentheses, but for I typed it to not confuse you.

So 2/3 times the sum of 2/8 and 4/8. Get the sum of 2/8 and 4/8 (which is
((2/8)+(4/8)) and then add 2/3 outside to parentheses to indicate that you are multiplying them.

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Amiraneli [1.4K]

Answer:

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Step-by-step explanation:

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Let's substitute the first equation into the second one.

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I'll use my graphical calculator to solve this but you could factor:

$x=3\\x=0.5\\x=-0.67$ (All rounded to 2 decimal places)

Now we can substitute these $x$ values into an equation for $y$ .

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$x=3, y = 49\\x=0.5, y = -3.5\\x=-0.67, y = -2.31$

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