Answer:
b = 7
Explanation:
3 ( b + 5 ) = 4 ( 2b - 5 )
The first thing to do is to distribute, using the distributive property.
3 ( b + 5 ) = 4 ( 2b - 5 )
3b + 15 = 8b - 20
whichever side has the highest x value subtract or add the common numeral from.
3b + 15 = 8b - 20
+ 20 + 20
3b + 35 = 8b
then subtract or add the smaller value of x.
3b + 35 = 8b
- 3b - 3b
35 = 5b
Then we divide both sides by the number next to the variable
5b / 5
35 / 5
Now you have the final solution using those numbers
b = 7