2006-11-16 06:11:32 · 20 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
3b/8-5=2
3b/8=2+5
3b=8(2+5)
3b=8x7
3b=56
b=56/3
b=18 2/3
2006-11-16 06:14:34 · answer #1 · answered by satyricon_uk 3 · 1⤊ 0⤋
3b / 8 - 5 = 2
3b / 8 - 5 + 5 = 2 + 5
3b / 8 = 7
8(3b/8) = 8 (7)
3b = 56
3b/3 = 56/3
b = 18.66666667
The answer is b = 18.66666667
Insert the b value into the equation
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Check
3b/8 - 5 = 2
3(18.66666667)/8 - 5 = 2
56/8 - 5 = 2
7 - 5 = 2
2 = 2
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2006-11-16 06:25:04 · answer #2 · answered by SAMUEL D 7 · 1⤊ 0⤋
Multiply both sides by 8 to get rid of the fractions:
8(3b/8-5)=8(2)
3b-40=16
Add 40 to both sides:
3b=56
b=56/3
Check:
3(56/3)/8-5=2
(56/8)-5=2
7-5=2
2=2
2006-11-16 08:51:33 · answer #3 · answered by Anonymous · 0⤊ 0⤋
I assume that your equation is:
(3b/8)-5=2, I put a bracket there to make sure that
it is not 3b/(8-5)=2
Then 3b/8=5+2
b=8*7/3
=56/3
=18.6667
the second equation means that b=2
2006-11-16 06:27:02 · answer #4 · answered by chanljkk 7 · 1⤊ 0⤋
3b/8 - 5 = 2 --- Add 5 to both sides...
3b/8 = 7 --- Multiply both sides by 8...
3b = 56 --- Divide both sides by 3...
b = 18 and 2/3 or 18.66 ("6" repeating)
If you meant: 3b/(8-5) = 2 --- First, subtract 5 from 8 in the denominator on the left side...
3b/3 = 2 --- The two 3's on the left side cancel each other out...
b = 2
Hope that helps...
2006-11-16 06:17:32 · answer #5 · answered by Anonymous · 3⤊ 0⤋
b is 2
2006-11-16 06:13:56 · answer #6 · answered by dsclimb1 5 · 1⤊ 1⤋
3b/8 - 5 = 2
3b/8 = 2 + 5
3b/8 = 7
3b = 7 x 8
3b = 56
b = 56/3
b = 18 2/3
2006-11-16 11:26:57 · answer #7 · answered by Kemmy 6 · 1⤊ 1⤋
3b = 2
so 3 x 2 = 6
8 -5 = 3
so
6/3 =2
2006-11-16 06:29:47 · answer #8 · answered by gybony05 1 · 1⤊ 1⤋
15. you've typed this incorrect, because the equation entered can't be solved. i ought to wager that's meant to be 17 + 2n = 21 - 2n. if so: 17 + 2n = 21 - 2n 17 + 4n = 21 4n = 4 n = a million 16. 3n - 2/5 = 7/10 3n - 4/10 = 7/10 3n = 11/10 n = 11/30 17. 7 + 3t/4 = -t/8 7+ 6t/8 = -t/8 6t/8 = 7 - t/8 7t/8 = 7 7t = fifty six t = 8 18. 13.7b - 6.5 = 8.3 - 2.3b 16b - 6.5 = 8.3 16b = 14.8 8b = 7.4 4b = 3.7 2b = a million.80 5 b = 0.925 and that i have blanketed the operating so that you'll be able to do it your self next time
2016-10-16 09:09:58 · answer #9 · answered by cywinski 4 · 0⤊ 0⤋
3b/8-5=2
so 3b/8=2+5
and 3b=(2+5)x8
therefore 3b=7x8 (which is 56)
so b=56/3
b=18.666666666
2006-11-16 13:37:01 · answer #10 · answered by smiler 2 · 1⤊ 0⤋