2006-11-09 12:07:34 · 9 answers · asked by traci g 1 in Science & Mathematics ➔ Mathematics
12 - 6r = 2r + 36
12 - 6r - 2r = 2r + 36 - 2r
12 - 8r = 36
12 - 8r - 12 = 36 - 12
- 8r = 24
- 8r /-8 = 24/ -8
r = 24/- 8
r = - 3
The answer is r = - 3
Insert the r value into the equation
- - - - - - - - - - - - - - -
12 -6r = 2r + 36
12 - 6(- 3) = 2(- 3) + 36
12 + 18 = -6 + 36
30 = 30
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2006-11-09 12:46:30 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋
r=3
2006-11-09 20:11:50 · answer #2 · answered by iamrawrness. 2 · 0⤊ 0⤋
12 - 6r = 2r + 36 (Add 6r and subtract 36 from both sides)
8r = -24 (Divide both sides by 4)
r = -3
Check:
12 - 6(-3) = 2(-3) + 36
12 + 18 = -6 + 36
30 = 30
QED
2006-11-09 20:58:30 · answer #3 · answered by CSUFGrad2006 5 · 0⤊ 0⤋
12-6r=2r+36
group like terms
-6r-2r=36-12
-8r=24
r= -3
2006-11-09 20:18:49 · answer #4 · answered by Phy A 5 · 0⤊ 0⤋
simple question..
12-6r=2r+36
2r+6r=12-36
8r= -24
r= -24/8= -3
2006-11-09 20:34:03 · answer #5 · answered by Zulkarnain A 1 · 0⤊ 0⤋
12-6r = 2r + 36
-8r = 24
r = -24/8
r = -3
2006-11-09 20:10:50 · answer #6 · answered by SpaceCtrl 2 · 0⤊ 0⤋
12 - 6r = 2r + 36
2(6 - 3r) = 2(r + 18)
6 - 3r = r + 18
-4r = 12
r = -3
2006-11-09 22:47:28 · answer #7 · answered by Sherman81 6 · 0⤊ 0⤋
Negative 3
2006-11-09 20:13:15 · answer #8 · answered by Anonymous · 0⤊ 0⤋
-3 is the right answer
2006-11-09 20:39:01 · answer #9 · answered by rhondasumpter 2 · 0⤊ 0⤋