21x-16x=45-15

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Solution for 21x-16x=45-15 equation: 



21x-16x=45-15

We move all terms to the left:

21x-16x-(45-15)=0

We add all the numbers together, and all the variables

21x-16x-30=0

We add all the numbers together, and all the variables

5x-30=0

We move all terms containing x to the left, all other terms to the right

5x=30

x=30/5

x=6

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