5(10+k)=40

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Solution for 5(10+k)=40 equation: 



5(10+k)=40

We move all terms to the left:

5(10+k)-(40)=0

We add all the numbers together, and all the variables

5(k+10)-40=0

We multiply parentheses

5k+50-40=0

We add all the numbers together, and all the variables

5k+10=0

We move all terms containing k to the left, all other terms to the right

5k=-10

k=-10/5

k=-2

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