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Nwolf82 Nwolf82
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11 years ago
5(3-k)=20
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wrote...
#1
11 years ago
first divide both sides by 5:
3-k=4
now subtract 3:
-k=1
and divide by -1
k=-1
wrote...
#2
11 years ago
Divide both sides by 5
Subtract 3 from both sides
Divide both sides by -1
Answer: -1
wrote...
#3
11 years ago
5(3-k)=20
5*3-5*k=20 (Distributive Property)
15-5k=20
15-15-5k=20-15
-5k=5
k=5/-5
k=-1
wrote...
#4
11 years ago
Do the multipkication on the left side. 15 - 5k = 20  subtract 15 from both sides    -5k = 5  Divide both sides by -5    k = -1    Check.
wrote...
#5
11 years ago
start by removing the 5, since it is multiplying the variable, to get rid of it you divide
1- 5(3-k)/5=20/5 = 3-k=4
2- remove the 3, since it is positive 3, you subtract 3
3- 3-3-k=4-3 = -k=1
4- since the variable is negative, there is an imaginary -1 in front of it (-1)k=1
to get rid of it, divide my negative 1 (negative divided by negative = positive)
now you get -k/-1=1/-1
k= -1
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