Explanation:
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![\underline{ \underline{ \large{ \tt{S \: O \: L\:U\: T \: I \: O\: N}}}} :](https://img.qammunity.org/2022/formulas/mathematics/high-school/fw6n2cffja2fc74e3ho3pnlox74i0q770k.png)
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![\large{ \sf{12.8 = 4u}}](https://img.qammunity.org/2022/formulas/mathematics/high-school/ssrvaofx9fjiv4vw1qtvoyy24a9qyu90ja.png)
~Swap the sides of the equation :
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![\large{ \sf{4u = 12.8}}](https://img.qammunity.org/2022/formulas/mathematics/high-school/v5nszhdbb0n170wpeijgkjeftcjjccsmke.png)
~Here , we need to think about how to remove the coefficient 4. Since , the opposite of multiplication is division , divide both sides by 4
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![\large{ \sf{ (4u)/(u) = (12.8)/(4)}}](https://img.qammunity.org/2022/formulas/mathematics/high-school/tvpq2k4m68aokdegr2dw66v4mxr52myq20.png)
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![\large{ \sf{u = \boxed{ \sf{3.2}}}}](https://img.qammunity.org/2022/formulas/mathematics/high-school/ryfkm1fes79kmfltmx3int5cwxvj6y0a4v.png)
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![\huge{ \boxed{ \boxed{ \large{ \text{Our \: Final \: Answer }: \underline{ \boxed{ \bold{ \text{u = 3.2}}}}}}}}](https://img.qammunity.org/2022/formulas/mathematics/high-school/dk96x1dwafyva1avjiwmfoc5x28pbj9u8t.png)
Hope I helped ! ツ
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