How many 1/7 are there in 3 holes

Mathematics

2 answers:

Ksivusya [100]3 years ago

6 0

It is 21. Seven 1/7th's makes 7/7 which equals one. So multiply 7x3 and that is 21.

Gwar [14]3 years ago

5 0

This is the same as asking what 3 ÷ 1/7 is, and to divide whole numbers by fractions, you flip the second fraction and multiply. This makes the problem 3/1 × 7/1, which just equals 21 which is your answer. I hope this helps!

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is (-1/2 x + 6/7) - (7/2 x - 4/7) equivalent to -4 x + 2/7 ? use the properties of operations to justify your answer

LuckyWell [14K]

Answer:

The given equation is NOT justified.

Step-by-step explanation:

Here, the given equation is $(\frac{-1}{2}x + \frac{6}{7} ) - (\frac{7}{2}x - \frac{4}{7} )$ = $-4x + \frac{2}{7}$

Now, here Consider the left hand side and simplifying the left side by operating on the like terms,

⇒ $(\frac{-1}{2}x + \frac{6}{7} ) - (\frac{7}{2}x - \frac{4}{7} )$ = $\frac{-1}{2}x + \frac{6}{7} - \frac{7}{2}x + \frac{4}{7} = (\frac{-1}{2}x -\frac{7}{2}x) + (\frac{6}{7} + \frac{4}{7})$