How do you solve 3x=16-5x?

2 Answers
Mar 26, 2018

x=2

Explanation:

First of all, you are going to add 5x to each side. This will give you a new equation of 8x=16. The reason you add 5 is because you want to get rid of the -5x on the right. When you add 5 it changes to 0x. Anything times 0 equals 0. The next step is to divide both sides by 8. The reason you divide is to get x alone. When you divide 8x by 8, you get 1x. 1 times anything equals what the other thing is. For example, 1 times 4 is 4. This will give you your answer of x=2

Mar 26, 2018

The solution is x=2.

Explanation:

You can add 5x to both sides of the equation, then divide both sides by 8:

3x=16-5x

3xcolor(blue)+color(blue)(5x)=16-5xcolor(blue)+color(blue)(5x)

3xcolor(blue)+color(blue)(5x)=16color(red)cancelcolor(black)(color(black)-5xcolor(blue)+color(blue)(5x))

3xcolor(blue)+color(blue)(5x)=16

8x=16

color(blue)(color(black)(8x)/8)=color(blue)(color(black)16/8)

color(blue)(color(black)(color(red)cancelcolor(black)8x)/color(Red)cancelcolor(blue)8)=color(blue)(color(black)16/8)

x=color(blue)(color(black)16/8)

x=2

This is the answer. Hope this helped!