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Sagot :
Answer:
3(u +5) - 7u=-4u +15
Explanation:
According to the given data we have the following expression:
3(u +5) - 7u
To simplify this we would make the following:
First we would expand 3(u+5) applying the distributive law:
distributive law:
[tex]a\mleft(b+c\mright)=ab+ac[/tex][tex]a=3,\: b=u,\: c=5.\text{ So, }3\mleft(u+5\mright)=3u+15[/tex]So, 3u + 15 -7u=0
Finally simplify 3u + 15 -7u, so you would add the similar elements.
Therefore, you would get -4u +15
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