the differance between 12 and ten times a number is -28
2006-11-01 16:34:59 · 8 answers · asked by dest s 1 in Science & Mathematics ➔ Mathematics
Let
12 - 10x = the difference between 12 and 10x the number
-28 = Total
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12 - 10x = - 28
12 - 10x - 12 = - 28 - 12
- 10x = - 40
- 10x/- 10 = - 40/ - 10
x = 4
The answer is x = 4
Insert the x value into the equation
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Check
12 - 10x = - 28
12 - 10(4) = - 28
12 - 40 = - 28
- 28 = - 28
- - - - - - - -s-
2006-11-01 20:15:44 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋
* ten times a number = 10(x) , the x represents the unknown number which has to times by 10 to get the actual number.
* difference between 12 and 10(x) means minus both numbers (12 - 10x ) and you will get -28.
therefore,
12 - 10x = -28
12 + 28 = 10x
40 = 10x
40/10 = x
4 = x
2006-11-02 00:43:40 · answer #2 · answered by hirzi 2 · 1⤊ 0⤋
missing number is 4. since 12 - 10(4) = -28
2006-11-02 00:39:05 · answer #3 · answered by adam m 2 · 1⤊ 0⤋
it's a simple equation: 12-10x=-28. subtract 12 from each side and you get -10x=-40 and divide by -10 to get 4. it checks out because 10 times -4 is -40, and -40 -(plus) 12 is -28
2006-11-02 00:40:11 · answer #4 · answered by Steven H 1 · 1⤊ 0⤋
12-10x=-28
Subtract 12 on both sides:
-10x=-40
x=4
Check:
12-10(4)=-28
12-40=-28
-28=-28
2006-11-02 00:38:56 · answer #5 · answered by Anonymous · 0⤊ 0⤋
10x-12=-28
10x=-16
x=-1.6
or
12-10x=-28
12+28=10x
10x=40
x=4
2006-11-02 00:45:22 · answer #6 · answered by yupchagee 7 · 0⤊ 0⤋
looks very simple but very tricky !
2006-11-02 01:45:32 · answer #7 · answered by woodbaz 2 · 0⤊ 0⤋
i'm also confuse about this.
2006-11-02 01:20:59 · answer #8 · answered by hpz ftw 4 · 0⤊ 0⤋