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What is the value of [tex]$m$[/tex] in the equation [tex]$\frac{1}{2} m-\frac{3}{4} n=16$[/tex], when [tex][tex]$n=8$[/tex][/tex]?

A. 20
B. 32
C. 44
D. 48


Sagot :

To find the value of [tex]\( m \)[/tex] in the equation [tex]\(\frac{1}{2} m - \frac{3}{4} n = 16\)[/tex] when [tex]\( n = 8 \)[/tex], follow these steps:

1. Start by substituting [tex]\( n = 8 \)[/tex] into the equation:
[tex]\[\frac{1}{2} m - \frac{3}{4} \cdot 8 = 16\][/tex]

2. Simplify the term with [tex]\( n \)[/tex] in it:
[tex]\[\frac{3}{4} \cdot 8 = \frac{3 \cdot 8}{4} = \frac{24}{4} = 6\][/tex]

3. Now, substitute back into the equation:
[tex]\[\frac{1}{2} m - 6 = 16\][/tex]

4. To isolate the [tex]\(\frac{1}{2} m\)[/tex], add 6 to both sides of the equation:
[tex]\[\frac{1}{2} m = 16 + 6\][/tex]
[tex]\[\frac{1}{2} m = 22\][/tex]

5. To solve for [tex]\( m \)[/tex], multiply both sides by 2 to get rid of the fraction:
[tex]\[m = 22 \cdot 2\][/tex]
[tex]\[m = 44\][/tex]

Therefore, the value of [tex]\( m \)[/tex] is [tex]\( 44 \)[/tex]. So, the correct answer is:
[tex]\[ \boxed{44} \][/tex]