SOLUTION: 7-4[3-(4y-5)]

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Question 946313: 7-4[3-(4y-5)]
Found 2 solutions by garrylawrence, stanbon:
Answer by garrylawrence(1) About Me  (Show Source):
You can put this solution on YOUR website!
First expand the brackets; 4*3, 4*-4y, 4*5
So you have 7-(12-16y+20)
Then expand again
So you have 7-12+16y-20
Which simplifies to 16y-25

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
7-4[3-(4y-5)]
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Work from the inside to the outside::
= 7-4[3-4y+5]]
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= 7-4[8-4y]
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= 7-32 + 16y
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= 16y - 25
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Cheers,
Stan H.
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