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Olin [163]
3 years ago
7

How to divide fractions without calculator?

Mathematics
1 answer:
kirill115 [55]3 years ago
6 0
Use the bus stop rule
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Answer:

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Step-by-step explanation:

the sum of the numbers is 15y

the new sum after increase each number by 30 is 15y+450

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2 years ago
Given: ⅓ (18x + 27) = 81 Prove: x = 12
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Answer:

Firstly, rewrite the equation:

⅓ (18 + 27) = 81

Substitute x for the given number of it's supposed equivalent.

In this case x = 12.

⅓ (18(12) + 27) = 81

Solve using PEMDAS and simplify what is in the parenthesis first. Then, multiply.

(18 x 12) + 27 = 243

Now, solving using PEMDAS, multiply the total of what you got that was originally in the parenthesis by ⅓ .

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When you multiple these number they are equivalent to 81.

81 = 81

Since the equation given, when substituted x for 12, is equivalent to 81, this proves that substituting x for 12 makes this equation true.

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