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gregori [183]
3 years ago
10

Solve for x 15x + 6 = 10x + 21

Mathematics
2 answers:
tensa zangetsu [6.8K]3 years ago
7 0
15x+6=10x+21   When finding x you must get x alone on one side. Start by
-10x      -10x   subtracting the equal number of the smallest x in the
5x+6=21  equation. Remember what you do to one side you must do to the 
-6        -6 other side as well because both sides are equivalent to one 
5x=15      another. Giving you no x value on one side. Then continue 
/5     /5     getting x alone. Because it says +6 you must subtract six on 
x=3        both sides. Which makes the 6 now equivalent to 0 so it is no longer apart of the equation. Then you must divide the value beside x by itself to make the x value equal 0. Never forget to do it to the other side as well. This gives you x=3. 
I hope this helped you out. 
I love doing these types of problems. :)
tigry1 [53]3 years ago
3 0
15x+6=10x+21
5x+6=21
5x=15
x=3
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