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Nine is subtracted from a number, and then the difference is multiplied by 5. The result is 75. What is the number?

2007-10-08 16:27:55 · 11 answers · asked by Anonymous in Science & Mathematics Mathematics

11 answers

call the number x
Nine is subtracted from a number gives you x-9
the difference is multiplied by 5 gives you 5(x-9)
The result is 75 gives you =75

so the equation to solve is
5(x-9)=75

2007-10-08 16:31:02 · answer #1 · answered by Paladin 7 · 2 0

Let x be the number.

Nine is subtracted from a number, >>>>>>>>>>>>> x - 9
and then the difference is multiplied by 5.>>>>>>>>> 5(x-9)
The result is 75.>>>>>>>>>>>>>>>>>>>>>>>>>>>> 5(x-9) = 75
What is the number? >>>>>>>>>>>>>>>>>>>>>>>Solve for x

5(x-9) = 75
Multiply 5 to the terms inside the parentheses (Distributive property of multiplication)
5x - 45 = 75
Add 45 to both sides of the equation (to eliminate -45 in the other side of the equation, so only the term with a variable is left)
5x = 120
To solve for x, divide both sides of the equation by 5.
x = 24

2007-10-08 16:35:17 · answer #2 · answered by edith p 3 · 0 0

A number could be anything, so its also varies : call it X
So 9 is subtracted form it : X-9
You then multiply the quantity which is (X-9)5
You get 5X -45 = 75
5X = 75 + 45
5X = 120
X = 24

2007-10-08 17:19:22 · answer #3 · answered by TicToc.... 7 · 0 0

say X is "the number"

(X-9)x5

first, you just want to know 5 time WHAT is 75? it is 15... therefore

you would ad 9 to that fifteen... which is 24

x=24

example

(24-9)x5=75

(24-9)= 15

15 times 5 equals 75

x=24

2007-10-08 16:33:23 · answer #4 · answered by yafathomiejt 3 · 0 0

I lived in the U.S. for 8 years, therefore went to middle school and high school there. I came back to Brazil to go to college here, and all my grades had to be "translated." I think that you don't have to officially translate; send your transcript the way it is and I'm sure the college itself has a way to see it. They probably know the german grading system etc.. When I got here, the asked an official translator to translate my transcript; the only thing he did was translate the classes I had to the Brazilian equivalent.. the grades remained the same (A, A+, A- etc...) The Education center here, knew what it meant ... Edit: Plus, not all schools in the U.S have the same grading system; some use 100 etc.. same thing goes for the GPA...it's not all the same.

2016-05-19 03:33:14 · answer #5 · answered by Anonymous · 0 0

We let the "mystery number" be x.
So we end up with:
(x-9)5 = 75.
You can then rearange to solve, finding
x = 24

2007-10-08 16:31:37 · answer #6 · answered by cybercam12 2 · 0 0

work backwards...

75 divided by 5 = 15

so now you now x-9=15

add 9 to 15 which is 24

x=24

2007-10-08 16:32:12 · answer #7 · answered by Linda 2 · 0 0

5(9-x)=75
I'm using "x" as a variable.
45-x=75
subtract 45 by both sides
-x=30
So x= -30

2007-10-08 16:32:08 · answer #8 · answered by redyoshi125 2 · 0 0

(x - 9) * 5 = 75

5x - 45 = 75

5x = 120

x = 24

2007-10-08 16:31:17 · answer #9 · answered by Gruntled Employee 6 · 0 0

(x-9)*5=75

x-9=75/5

x=(75/5)+9

x=15+9

x=24

2007-10-08 16:32:04 · answer #10 · answered by Jennifer 3 · 0 0

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