SOLUTION: Can you please explain how to solve equations such as (9k+30)-(4k+10)=100 ? thanks

Question 650938: Can you please explain how to solve equations such as (9k+30)-(4k+10)=100 ? thanks
Found 3 solutions by MathLover1, stanbon, Aaniya:
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!
first remove the parentheses,
recall:
When parentheses are preceded by a plus sign + simply remove them. Nothing changes.
When parentheses are preceded by a minus sign−change the sign of every term within the parentheses.

....round

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
(9k+30)-(4k+10)=100
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9k + 30 -4k - 10 = 100
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5k +20 = 100
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5k = 80
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k = 16
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Cheers,
Stan H.
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Answer by Aaniya(63)   (Show Source): You can put this solution on YOUR website!
(9k+30)-(4k+10)=100
9k+30-4k-10=100
9k-4k+30-10=100
5k+20=100
5k=100-20
5k=80
k=80/5
k=16
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