x+0.3x=690

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Solution for x+0.3x=690 equation:



x+0.3x=690
We move all terms to the left:
x+0.3x-(690)=0
We add all the numbers together, and all the variables
1.3x-690=0
We move all terms containing x to the left, all other terms to the right
1.3x=690
x=690/1.3
x=530+1/1.3

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