How do you solve #-3( b + 9) = - 8#?

1 Answer
Jim G.
Sep 11, 2017

#b=-19/3#

Explanation:

#"distribute the bracket on the left"#

#-3b-27=-8#

#"add 27 to both sides"#

#-3bcancel(-27)cancel(+27)=-8+27#

#rArr-3b=19#

#"divide both sides by - 3"#

#(cancel(-3) b)/cancel(-3)=19/(-3)#

#rArrb=-19/3#

#color(blue)"As a check"#

Substitute this value into the left side of the equation and if it is equal to the right side then it is the solution.

#-3(-19/3+9)=19-27=-8=" right side"#

#rArrb=-19/3" is the solution"#

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