Question

Solve for b. 9000-b=-11,000+b

Answer 1

b=10,000

Explanation:

`9,000-b=-11,000+b`

Regroup terms

`9,000-b=b-11,000`

Add b to both sides

`9,000-b+b=b+b-11,000\\9,000=2b-11,000`

Add 11,000 to both sides

`9,000+11,000=2b-11,000+11,000\\9,000+11,000=2b`

Simplify by adding

`20,000=2b`

Divide both sides by 2

`(20,000)/(2)=(2b)/(2)\\ \\10,000=b`

Switch sides

`b=10,000`

Done.

Answer 2

b=10000

Explanation:

add b on both sides

9000=-11000+2b

add -11000 on both sides

20000=2b

divide by 2 on both sides

b=10000