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3x=-0.4x+-0.3.141592
We move all terms to the left:
3x-(-0.4x+-0.3.141592)=0
We add all the numbers together, and all the variables
3x-(-0.4x-0.0424776)=0
We get rid of parentheses
3x+0.4x+0.0424776=0
We add all the numbers together, and all the variables
3.4x+0.0424776=0
We move all terms containing x to the left, all other terms to the right
3.4x=-0.0424776
x=-0.0424776/3.4
x=-0.0424776/3.4
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