A number decreased by 30 is the same as 14 decreased by 3 times the number. Find the number. Explain! Help?
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A number decreased by 30 is the same as 14 decreased by 3 times the number. Find the number. Explain! Help?

[From: ] [author: ] [Date: 14-03-06] [Hit: ]
First write and solve the equation....x - 30 = 14 -3x ==> 4x = 44 ==>x= 11 OK!x = 11.......
Let 'x' be the nunber.

Since number decreased by 30 means x - 30

14 decreased by 3 times the number means 14-3x

Since these are same,

x-30=14-3x

x+3x = 14+30

4x = 44

x = 11

-
x-30=14-3x

4x=44

x=11

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In algebra (because it is shorter), let x be the number:
x-30 = 14-3x
Add 3x to the equation (gets the x's on one side)
4x-30=14
add 30 to the equation (leaves only x's on lhs of the equation)
4x=44
divide by 4
x=11

-
Let x be the number.
x - 30 = 14 - 3x
x + 3x = 14 + 30
4x = 44
x = 44/4 = 11

-
x=11

-
Let the number be x:
x - 30 = 14 - 3x
add 30 to both sides, add 3x to both sides:
4x = 44
divide both sides by 4:
x = 44/4 = 11

- .--

-
First write and solve the equation.... considering x the number the equation is so

x - 30 = 14 -3x ==> 4x = 44 ==> x= 11 OK!

-
x - 30 = 14 - 3x
4x = 44
x = 11
Number is 11

-
x - 30 = 14 - 3x
4x = 44
x = 11.
1
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