Solve for k
k=19
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10k-30-4\left(2k+2\right)=0
Use the distributive property to multiply 10 by k-3.
10k-30-8k-8=0
Use the distributive property to multiply -4 by 2k+2.
2k-30-8=0
Combine 10k and -8k to get 2k.
2k-38=0
Subtract 8 from -30 to get -38.
2k=38
Add 38 to both sides. Anything plus zero gives itself.
k=\frac{38}{2}
Divide both sides by 2.
k=19
Divide 38 by 2 to get 19.
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