How do you solve #7k - ( 8+ 4) = 3( k - 3) - 4#?

1 Answer
Jim G.
Jan 30, 2018

#k=-1/4#

Explanation:

#"distribute the brackets"#

#rArr7k-12=3k-9-4#

#rArr7k-12=3k-13#

#"subtract 3k from both sides"#

#7k-3k-12=cancel(3k)cancel(-3k)-13#

#rArr4k-12=-13#

#"add 12 to both sides"#

#4kcancel(-12)cancel(+12)=-13+12#

#rArr4k=-1#

#"divide both sides by 4"#

#(cancel(4) k)/cancel(4)=(-1)/4#

#rArrk=-1/4" is the solution"#

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