Question

Solve for the b 4 ( b + 5 )- 2b = 100

Answer 1

`\tt b=40`

Explanation:

`\tt 4 ( b + 5 )- 2b = 100`

`\bf Expand\; (Apply\; Distributions\; Law) :-`

`\tt 2b+20=100`

`\tt 2b+20-20=100-20\;\; (Subtract \;20\; from\; both \;sides)`

`\tt 2b=80`
`\tt (Simplify)`

`\tt \cfrac{2b}{2}=\cfrac{80}{2}\;\;( Divide\; both \;sides\: by\; 2)`

`\tt b=40`

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Answer 2

4 ( b + 5 )- 2b = 100

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B = 40