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Briana Weeks
Mathematics
17 October, 13:57
6-3/4x+1/3=1/2x + what is this
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Irvin Parks
17 October, 14:13
0
x = 76/15
Step-by-step explanation:
Solve for x:
- (3 x) / 4 + 1/3 + 6 = x/2
Put each term in - (3 x) / 4 + 1/3 + 6 over the common denominator 12: - (3 x) / 4 + 1/3 + 6 = - (9 x) / 12 + 4/12 + 72/12:
- (9 x) / 12 + 4/12 + 72/12 = x/2
- (9 x) / 12 + 4/12 + 72/12 = (-9 x + 4 + 72) / 12:
(-9 x + 4 + 72) / 12 = x/2
Grouping like terms, - 9 x + 4 + 72 = (72 + 4) - 9 x:
((72 + 4) - 9 x) / 12 = x/2
72 + 4 = 76:
(76 - 9 x) / 12 = x/2
Multiply both sides by 12:
(12 (76 - 9 x)) / 12 = 6 x
(12 (76 - 9 x)) / 12 = 12/12 * (76 - 9 x) = 76 - 9 x:
76 - 9 x = (12 x) / 2
12/2 = (2*6) / 2 = 6:
76 - 9 x = 6 x
Subtract 6 x from both sides:
76 + (-9 x - 6 x) = 6 x - 6 x
-9 x - 6 x = - 15 x:
-15 x + 76 = 6 x - 6 x
6 x - 6 x = 0:
76 - 15 x = 0
Subtract 76 from both sides:
(76 - 76) - 15 x = - 76
76 - 76 = 0:
-15 x = - 76
Divide both sides of - 15 x = - 76 by - 15:
(-15 x) / (-15) = (-76) / (-15)
(-15) / (-15) = 1:
x = (-76) / (-15)
Multiply numerator and denominator of (-76) / (-15) by - 1:
Answer: x = 76/15
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