How do you solve #-10k +1 = 40 - 7k#?

1 Answer
Jim G.
Sep 18, 2016

#k=-13#

Explanation:

We want to get the k terms on the left side of the equation and numeric values on the right side.

add 7k to both sides of the equation.

#-10k+7k+1=40cancel(-7k)cancel(+7k)#

#rArr-3k+1=40#

now subtract 1 from both sides.

#-3kcancel(+1)cancel(-1)=40-1#

#rArr-3k=39#

To solve for k divide both sides by - 3.

#(cancel(-3) k)/cancel(-3)=39/(-3)#

#rArrk=-13" is the solution"#

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