690+2x=900

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Solution for 690+2x=900 equation: 



690+2x=900

We move all terms to the left:

690+2x-(900)=0

We add all the numbers together, and all the variables

2x-210=0

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

2x=210

x=210/2

x=105

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