Evaluate the Expression: Converting Ratio 19:8 to Standard Form

What expression does the 19:8 exercise equal?

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find the equivalent expression
00:03 Use the distribution law
00:07 Break down 19 into 20 minus 1
00:12 Divide each factor and then subtract
00:23 Solve the division and find the expression
00:30 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

What expression does the 19:8 exercise equal?

2

Step-by-step solution

Let us begin by decomposing 19 into a subtraction exercise:

(20−1):8= (20-1):8=

Next we divide each term inside of the parentheses by 8:

20:8−1:8= 20:8-1:8=

We can see that answers C+D can be discarded since we divided 20 by 8.

Now we write the division exercise on the right as a fraction and we get:

20:8−18 20:8-\frac{1}{8}

3

Final Answer

20:8 and we subtract 18 \frac{1}{8}

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\( 140-70= \)

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