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0.12x-2600+0.03x=2790
We move all terms to the left:
0.12x-2600+0.03x-(2790)=0
We add all the numbers together, and all the variables
0.15x-5390=0
We move all terms containing x to the left, all other terms to the right
0.15x=5390
x=5390/0.15
x=35933+0.050000000000182/0.15
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