Question

Simplify. 3(u +5) - 7u

Answer 1

3(u +5) - 7u​=-4u +15

Step-by-step 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:

`a\mleft(b+c\mright)=ab+ac`
`a=3,\: b=u,\: c=5.\text{ So, }3\mleft(u+5\mright)=3u+15`

So, 3u + 15 -7u=0

Finally simplify 3u + 15 -7u, so you would add the similar elements.

Therefore, you would get -4u +15