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nataly862011 [7]
3 years ago
13

I think I got the answer correct and someone please check it

Mathematics
1 answer:
serg [7]3 years ago
7 0

3 1/4* 1 1/3

mutiply the whole numbers

3*1= 3

mutiply the numerators

1*1= 1

mutiply the denominators

4*3= 12

Answer:

3 1/12 - second choice

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Three fourths a number plus 8 is 20 less than the number
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Answer:

Equation:  \frac{3}{4}n+8=n-20

Solve for n:  n = 112

Step-by-step explanation:

To first set up the equation, you need to look at the verbal description and translate into numbers and operations:

'three fourths a number' =  \frac{3}{4} n

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Put the expressions together:

'three fourths a number plus 8':  \frac{3}{4}n+8

'20 less than the number': n - 20

Set them equal to each other and solve: \frac{3}{4}n+8=n-20

Add 20 to both sides: \frac{3}{4}n+8+20=n-20+20

Subtract \frac{3}{4}n from both sides: \frac{3}{4}n-\frac{3}{4}n+28=n-\frac{3}{4}n

Multiply both sides by \frac{4}{1}: \frac{4}{1}28=\frac{1}{4}n\frac{4}{1}

Solve for n:  n = 112

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