How do you solve 2(2.5b -9) +6b =72(2.5b9)+6b=7?

1 Answer
Apr 27, 2018

b = 25/11b=2511 or about 2.272.27

Explanation:

2(2.5b-9)+6b = 72(2.5b9)+6b=7

First, expand by distributing 2(2.5b-9)2(2.5b9):
5b-18+6b=75b18+6b=7

Combine 5b5b and 6b6b:
11b - 18 = 711b18=7

Add color(red)(18)18 to both sides of the equation:
11b - 18 quadcolor(red)(+quad18) = 7 quadcolor(red)(+quad18)

11b = 25

Divide both sides by 11:
(11b)/color(red)(11) = 25/color(red)(11)

So the final answer is:
b = 25/11 or about 2.27

Hope this helps!