A+9=10+b

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Solution for A+9=10+b equation:



+9=10+A
We move all terms to the left:
+9-(10+A)=0
We add all the numbers together, and all the variables
-(A+10)+9=0
We get rid of parentheses
-A-10+9=0
We add all the numbers together, and all the variables
-1A-1=0
We move all terms containing A to the left, all other terms to the right
-A=1
A=1/-1
A=-1

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