How do you work out: 3x-5=x+3?

Question

Read as:

three times X subtract five equals X plus three

Answer 1

3x-5=x+3

3x-5 (-x)=x+3 (-x)      subtract x from both sides

2x-5=3

2x-5 (+5)=3 (+5)       add 5 to both sides

2x=8

2x (/2)=8 (/2)              divide both sides by 2

x=4

Answer 2

3x-5=x+3

   +5=+5

3x=x+8

-x = -x

2x=8

2(2x)=2(8)

x=4

Answer 3

minus the x so you get 2x-5=3

add the 5 to both sides so you get 2x=8

then divide by 2 so you get x=4

Answer 4

Gather all the x's on one side of the '=' and all the integers on the other. The answer then becomes obvious.

Answer 5

3x-5=x+3

    +5    +5

3x=x+8

-x   -x

2x=8

divide by 2 on both sides

x=4 ???

Answer 6

subtract the three from each side

that makes -5 now -8

your problem is now: 3x-8=x

now you subtract the 3x on each side

now you have -8=-2x

divide by -2 and x will equal 4

youre welcome!

Answer 7

Ah, balancing equations. The good old days.

3x -5 = x+3

Subtract x from both sides.

2x -5 = 3

Add 5 to both sides. Notice that on the left side you have -5, so that goes away.

2x = 8

8/2=4

x=4

Let's go backwards and check that.

3x-5. 3x=12. 12-5=7

x+3. x=4. 4+3=7

Yep, the answer is 4.

Answer 8

3x-x=3+5

2x=8

x=8/2

x=4