How do you solve #-3( b + 9) = - 8#?
1 Answer
Sep 11, 2017
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"#