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0.02x-0.46=-0.21x
We move all terms to the left:
0.02x-0.46-(-0.21x)=0
We get rid of parentheses
0.02x+0.21x-0.46=0
We add all the numbers together, and all the variables
0.23x-0.46=0
We move all terms containing x to the left, all other terms to the right
0.23x=0.46
x=0.46/0.23
x=2
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