Homework help: I have an algebraic question.?

🎓 學業台家課輔助

[匿名]

2017-05-26 3:38 am

What does x equal if:
4x+1=19-2x

Take me step by step please so I know what I'm doing.

更新1:

THANKS FOR SOLVING THIS EVERYONE! I have a maths test coming up tomorrow!

回答 (4)

[匿名]

2017-05-26 4:03 am

✔ 最佳答案

4x + 1 = 19 - 2x

The goal is to get the "x" on one side and the number on the other side.
Always do the same thing to both sides.

Add 2x to both sides
   4x + 1 = 19 - 2x
+ 2x                +2x
---------------------
   6x + 1 = 19

Subtract 1 from both sides
6x + 1 = 19
      - 1      -1
----------------
  6x       = 18

Divide both sides by 6
x = 3 <––––––

http://goo.gl/y49sTR

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[匿名]

2017-05-26 7:25 am

the old way but easier.
When a value changes sides, change the sign.

4x+1=19-2x

4x+2x = 19-1

6x = 18

x= 18/6 = 3

👍 2 👎 0

[匿名]

2017-05-26 4:02 am

4x+1=19-2x

4x = 19-2x-1

4x = 18-2x
4x+2x=18

6x=18

X=18/6

X=3

👍 2 👎 0