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

1 Answer
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"