2x + 5 = 10 : value of x?

2008-03-23 5:31 am

回答 (14)

2008-03-23 10:42 am
✔ 最佳答案
2x = 5
x = 5 / 2
x = 2½
2008-03-23 5:34 am
2x+5=10
Take 5 away from both sides
2x+5-5=10-5
Simplify
2x=5
Divide both sides by 2
x=5/2
2016-04-11 9:18 am
10x=5+10 10x=15 x=1 1/2 2x=? 2x=3
2008-03-23 5:36 pm
2x + 5 = 10
2x = 10 - 5
2x = 5
x = 5/2
x = 2 1/2 (2.5)
2008-03-23 5:40 am
2x+5=10
-5 -5
2x=5
2/x=5/2
2008-03-23 5:40 am
2x+5=10

Subtract five from both sides. Numbers and variables don't like to be on the same side.

2x=5

Divide each side by two. x Likes to be alone.

x=5/2, or x=2.5
2008-03-23 5:38 am
2x+5=10

We subtract 5 from both sides of the equation, now we have

2x=5

We divide both sides of the equation by 2, giving us

2.5
參考: I am math enthusiast!
2008-03-23 5:36 am
2x+5=10
2x=10-5
2x=5
x=5/2
x=2.5
2008-03-23 5:35 am
2x+5=10

2x=10-5

2x=5

x = 5/2

hope that helps...
2008-03-23 5:34 am
2*(2.5) + 5 = 10
so x=2.5


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