Respuesta :
7-3b = 5b+15
move 5b to the other side
sign changes from +5b to -5b
7-3b-5b=5b-5b+15 ( combine like terms)
7-3b-5b=15
7-8b=15
move 7 to the other side
7-7-8b=15-7
-8b=15-7
-8b=8
divide both sides by -8
to get +b and by itself
-8b/-8=8/-8
Answer:
b=-1
Answer:
b=-1
Step-by-step explanation:
we have isolate variable on one side and number on other
so we move 5b to the right side and it becomes negative and we move 7 to the left and it becomes negative
-3b-5b=15-7
-8b = 8
__ __ (you divided -8 by -8b to isolate b and by the other side)
-8 -8
b= -1
