Solve the Division Chain: 21:(30:10) Step-by-Step Solution

21:(30:10)= 21:(30:10)=

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Step-by-step video solution

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00:00 Solve
00:03 Division is also multiplication by the reciprocal
00:07 Therefore when opening the parentheses, it will end up multiplied by C
00:11 We will use this formula in our exercise
00:16 We will solve according to the order of operations from left to right
00:21 We'll divide by 3, and substitute in our exercise
00:28 We will reduce what we can
00:32 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

21:(30:10)= 21:(30:10)=

2

Step-by-step solution

We will use the formula:

a:(b:c)=a:b×c a:(b:c)=a:b\times c

Therefore, we will get:

21:30×10= 21:30\times10=

Let's write the division exercise as a fraction:

2130=710 \frac{21}{30}=\frac{7}{10}

Now let's multiply by 10:

710×101= \frac{7}{10}\times\frac{10}{1}=

We'll reduce the 10 and get:

71=7 \frac{7}{1}=7

3

Final Answer

7 7

Practice Quiz

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\( 100-(5+55)= \)

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