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i need help with these kind of question.Thank you

2007-02-14 15:53:41 · 7 answers · asked by sochn9022jkl 1 in Science & Mathematics Mathematics

7 answers

(60/a)/40/16=1/2
Multiply both sides by 16
(60/a)/40 = (1/2)*16
(60/a)/40 = 8
Multiply both sides by 40
60/a = 8*40
60/a = 320
Multiply both sides by a
60 = 320a
Divide both sides by 320
60/320 = a
Simplify
3/16 = a

2007-02-14 15:58:26 · answer #1 · answered by Anonymous · 0 0

You need to take the a up. Then you'll see clearly what to do.

Say that your equation was (60/a)/(40/16)=1/2

Here it depends on where you place the parentheses, but for the sake of the process that you want illustrated, let's say it was like that.

Then you multiply (60*16)/(a*40)=1/2

Then you take the a to the other side, (60*16)*2=(a*40)*1

Then that would be 1920=40a

And then a= 1920/40, etc.

If it was ((60/a)/40)/16=1/2, the same thing goes

First resolve the parenth. (60/a)/(40/1), that is 60/40a -> 3/(2a)
Then (3/2a)/(16/1), that is 3/32a

3/32a=1/2
2*3=32a*1
6=32a
a=6/32
a=3/16

Remeber yourself some process like this, and later on the rules will become automatic for you.

2007-02-15 00:04:43 · answer #2 · answered by Clara 2 · 0 0

Step 1: Multiply both sides by 16

(60/a)/40 = (1/2)x16 = 8

Step 2: Multiply both sides by 40

(60/a) = 8 x 40 = 320

Step 3: Multiply both sides by a

60 = 320a

Step 4: Divide both sides by 320

60/320 = a

Step 5: Cancel 60/320 = 30/160 = 3/16

a = 3/16

2007-02-15 00:01:06 · answer #3 · answered by gumtrees 3 · 0 0

Multiply through by 16, to get (60/a)/40 = 8. Multiply through by 40 to get 60/a = 320. Multiply through by a to get 60 = 320 a. The last step is yours.

2007-02-14 23:58:39 · answer #4 · answered by Anonymous · 0 0

first multiply by 16 (to cancel the last division), getting
(60/a)/40 = 8

then multiply by 40, getting
60/a = 320

finally, multiply by a and divide by 320, getting
60/320 = a
3/16 = a

2007-02-15 00:01:36 · answer #5 · answered by Philo 7 · 0 0

(60/a)/40/16=1/2
or, 60*(1/a)*(1/40)*(1/16)=1/2
or, 60*(1/a)=(1/2)*40*16
or, 60*(1/a)=320
or, a=60/320
or, a= 3/16

2007-02-15 02:02:48 · answer #6 · answered by nazia f 4 · 0 0

(60/a)/40/16=.5
(60/a)/40=8
60/a=320
60/320=a
3/16=a

2007-02-14 23:58:31 · answer #7 · answered by JJ 2 · 0 0

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