2006-09-27 16:24:23 · 12 answers · asked by cookie 1 in Science & Mathematics ➔ Mathematics
2B-8+B=7
+8 +8
2B+B=15
3B=15
/3 /3
B=5
You just needed to get B by itself
2006-09-27 16:28:26 · answer #1 · answered by Jessica 6 · 0⤊ 0⤋
2B-8+B=7
2B+B=7+8(collect the like terms)
3B=15
B=15/3
B=5
2006-09-28 06:01:12 · answer #2 · answered by srirad 2 · 0⤊ 0⤋
2b-8+b=7, 3b=15, b=5
2006-09-27 23:30:38 · answer #3 · answered by yvonne t 2 · 0⤊ 0⤋
2B - 8 + B = 7
3B - 8 = 7
Collecting like terms
3B - 8 + 8 = 7 + 8
Adding + 8 to both sides of the equation
3B = 15
3B/3 = 15/3
Dividing both sides of the equation by 3
B = 5
The solution set is { 5 }
Insert the B value into the equation
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Check
2B - 8 + B = 7
2(5) -8 + 5 = 7
10 - 8 + 5 = 7
2 + 5 = 7
7 = 7
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The answer is B = 5
2006-09-28 07:53:45 · answer #4 · answered by SAMUEL D 7 · 0⤊ 0⤋
i will explain first,
send -8 to right hand side so the equ.is"2b+b=7+8"becos when a number transfers from left hand side to right hand side the sign changes as follows "+ will change to -[minus]".
2b+b=7+8 so the solution is 2b+b is 3b and 7+8=15
so the equation is 3b=15
transfer 3 to right hand side and you will get b value
b=15\3 so the answer is b=5 i think u understood any doubts contact me bye
2006-09-28 00:49:38 · answer #5 · answered by bablu_ankith 2 · 0⤊ 0⤋
b=5
2006-09-27 23:26:52 · answer #6 · answered by Anonymous · 0⤊ 0⤋
2B-8+B=7
3B=7+8
3B=15
B=15/3
B=5
Verify:
L.H.S
2B-8+B
=2(5)-8+5
=10-8+5
=15-8
=7
R.H.S
=7
Since, L.H.S = R.H.S
Hence, verified...!
and this is the only possible right answer......:@)
2006-09-28 10:31:33 · answer #7 · answered by Nikki 2 · 0⤊ 0⤋
2B or not 2B.. that is the question!
3B = 15
B = 5
2006-09-27 23:32:14 · answer #8 · answered by Anonymous · 0⤊ 0⤋
2B-8+B=7
3B-8=7
3B=15
3B/3=15/3
B=5
2006-09-27 23:30:49 · answer #9 · answered by lois lane 3 · 0⤊ 0⤋
It is a mathematical equation, a homework question that you should figure out!
2006-09-27 23:38:39 · answer #10 · answered by pottersclay70 6 · 0⤊ 0⤋