solve multi step equations by drawing models

Question

4b - 8 = 3b + 5

Answer 1

you can solve this algebratically (pretty sure i mispelled that) or by graphing, I assume your teacher wants you to do it by graphing but i'll do it both way.

Graph: y = 4x - 8   y=3x + 5 and see where they intersect, (using a graphing calculator) they intersect at  x= 13 y =44  (13, 44)

Algebra:

4b - 8 = 3b + 5 subtract 3b from both sides

b - 8 = 8 now add 5 to both sides

b= 13 (b is the equivilent or the same as x)

now take b and substitute it into the equation

4(13) - 8 = 3(13)+5

44=44

Answer 2

4b-3b=5+8

   b=13