Solve the equation?

2008-04-03 10:20 am
3m/2 - 5m-2/3 = 5/12

回答 (12)

2008-04-05 3:15 pm
✔ 最佳答案
Brackets MUST be used to clarify question. As given, tha question may be interpreted in a number of ways.

GUESSING at :-
3m / 2 - (5m - 2) / 3 = 5 / 12
18m - 20m + 8 = 5
- 2m = - 3
2m = 3
m = 1½
2008-04-03 10:44 am
3m/2 - 5m - 2/3 = 5/12
18m - 60m - 8 = 5
42m = - 13
m = - 13/42

Answer: m = - 13/42

Proof:
(3[- 13/42]/2) - 5(- 13/42) - 2/3 = 5/12
(3[- 13/84]) + 65/42 - 2/3 = 5/12
- 13/28 + 65/42 - 2/3 = 5/12
- 39/84 + 130/24 - 56/84 = 5/12
35/84 = 5/12
5/12 = 5/12
2016-11-15 10:36 pm
the answer is nineteen! distinctive how-to under: to make this much less stressful, team the x's consisting of, of direction, their +/- signs and indicators: 3x - 2x + 17 + 2 now it somewhat is an equation, and in case you spot no equivalent sign (=), then you definately ought to assume that if there became, your finished equation must be equivalent to 0: 3x - 2x + 17 + 2 = 0 now simplify-- use easy subtraction while coping with the variables (ignoring the x's, yet remembering to place them interior the end result) this means which you are able to reply to "3-2": 1x + 19 = 0 i've got been given the nineteen by using including 17 and a couple of. you at present have a "1x", yet you may get rid of the "a million", because of the fact writing down purely "x" truly skill "1x" x + 19 = 0 now to resolve it, the variable must be on one area, and the conventional fee on the different area. bear in techniques that in case you're taking a extensive determination or a variable around the equivalent sign, you ought to continually exchange it somewhat is +/- sign! : x = -19 or 19 = -x now you have the answer! x is comparable to "adverse 19" or "-19" or you are able to examine it as "adverse x is comparable to 19", it somewhat is the comparable ingredient. wish this became adequate ingredient.
2008-04-03 11:06 am
3m/2 - (5m - 2)/3 = 5/12
12[3m/2 - (5m - 2)/3] = 12(5/12)
6(3m) - 4(5m - 2) = 5
18m - 20m + 8 = 5
-2m = 5 - 8
-2m = -3
m = -3/-2
m = 3/2
m = 1 1/2 (1.5)
2008-04-03 10:59 am
can also be written as : 3m/2 -5m/1-2/3 -5/12=0
L.C.M= 12
Make the equation whole numbers
= 18m-60m-8-5=0
= - 42m-3=0
-42m=3
therefore m= - (3/42) or - 00.7
2008-04-03 10:38 am
3m/2 - 5m-2/3 = 5/12

Solution:

multiply 12 on both sides
we get
12(3m/2 - 5m-2/3) = 12(5/12)

18m - 60m - 8 = 5

-42m = 5+8

-42m = 13

m = -(13/42)
2008-04-03 10:37 am
3m/2-5m = 5/12+2/3
m= - 13/42
2008-04-03 10:37 am
Both answers above me are incorrect.

After you multiply by 12, you get

18m - 4(5m - 2) = 5

or

18m - 20m + 8 = 5

-2m = -3

so m = 3/2.

(They are forgetting to distribute negative signs when they multiply.)
2008-04-03 10:32 am
if the equation goes like this: 3m/2-(5m)-2/3=5/12 the correct answer is this one:
18m/12-60m/12-8/12=5/12
18m-60m-8=5
18m-60m=5+8
-42m=13
m=-13/42

If it goes like 3m/2 - (5m-2)/3=5/12
then skruf707 has the correct answer
2008-04-03 10:27 am
x12
18m - 60m - 8 = 5
-42 m = 13

m = - 13/42

Edit : Skruf 707, It's late go to sleep mon ! lol

niyi o : - 8 - 5 = -13 not -3


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