Answer:
Step-by-step explanation:
1/3(x+6)=12
x+6=12/(1/3)
x+6=(12/1)(3/1)
x+6=36/1
x+6=36
x=36-6
x=30
Answer: 30
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12(x+1/6)=8
x+1/6=8/12
x=8/12-1/6
x=8/12-2/12
x=6/12
simplify
x=1/2
Answer: 1/2
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-3(x+2)=-18
x+2=-18/-3
x+2=6
x=6-2
x=4
Answer: 4
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-3(x-2)=21
x-2=21/-3
x-2=-7
x=-7+2
x=-5
Answer: -5
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-5(4-x)=-40
4-x=-40/-5
4-x=8
x=4-8
x=-4
Answer: -4
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1/4(6-x)=1/4
6-x=(1/4)/(1/4)
6-x=1
x=6-1
x=5
Answer: 5