solve the equation 2x+3=7?

2009-08-24 9:15 am
solve the equation

回答 (19)

2009-08-24 10:13 am
✔ 最佳答案
2x + 3 = 7
2x = 7 - 3
2x = 4
x = 4/2 or 2

Answer: x = 2

Proof:
2(2) + 3 = 7
4 + 3 = 7
2009-08-24 9:22 am
This is an equation, which means that one side is equal to the other side.

Thus, 2x + 3 equals to 7.

So take three from both sides.

2x = 4, here's what happened: 2x +3 subtract 3 and 7 subtract 3.

Now you have 2 multiplied by an unknown number which all equals 4.

Well, let's divide by two so that we can isolate variable "x".

2x = 4
(2x) / 2 = 4 / 2
Then, x = 2.

Hope that helps!
2009-08-24 9:20 am
2x + 3 = 7
2x = 7 - 3
x = 4/2
x = 2
2009-08-24 9:20 am
x = 2
2016-05-27 11:29 am
Multiply both sides by 7 to get -2x + 3 = 35 -2x = 32 x = -16.
2009-08-25 4:49 pm
2x + 3 = 7
2x = 7 - 3
2x = 4
x = 4/2
x = 2
2009-08-25 9:32 am
2x + 3 = 7

Add -3 from each side of the equation

2x + 3 - 3 = 7 - 3

2x = 4

Divide each side by 2

2x/2 = 4/2

x = 2
2009-08-24 12:13 pm
This linear equation in two variables is solved in the following way:
2x + 3 = 7
2x = 7 - 3
2x = 4
x = 4/2
Thus x = 2

- By Nicky ...happy to help...!!
:)
2009-08-24 9:28 am
2x + 3 = 7
2x = 7 - 3
2x = 4
x = 4/2
=> x = 2
2009-08-24 9:28 am
4


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