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.4+.03x=7.31
We move all terms to the left:
.4+.03x-(7.31)=0
We add all the numbers together, and all the variables
.03x-6.91=0
We move all terms containing x to the left, all other terms to the right
.03x=6.91
x=6.91/.03
x=230+0.010000000000001/.03
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