Question 934877
#1. 6a+7=4a+7
Subtract 4a from both sides::
2a + 7 = 7
Subtract 7 from both sides::
2a = 0
Divide both sides by 2::
a = 0
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#2. 18h-5=11h-14
7h = -9
h = -9/7
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#3. 1/2f -2= 1/6f 
Multiply thru by 6 to get:
3f - 12 = f
2f = 12
f = 6
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Cheers,
Stan H.
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