4-6x/0.01+6.5=0.02-2x/0.02+7.

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4-6x/0.01+6.5=0.02-2x/0.02+7.4-6x/0.01+6.5=0.02-2x/0.02+7.4-6x/0.01+6.5=0.02-2x/0.02+7.4-6x/0.01-6.5

4-6x/0.01+6.5=0.02-2x/0.02+7.
4-6x/0.01+6.5=0.02-2x/0.02+7.

4-6x/0.01+6.5=0.02-2x/0.02+7.
4-6x/0.01-6.5=0.02-2x/0.02-7.5
4-600x-6.5=0.02-100x-7.5
4-6.5+7.5-0.02=500x
500x=4.98
X=0.00996