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2014-04-26T18:06:44+03:00

{[(x+7)*9]+3-(3*149)}/100=4

[(x+7)*9]+3-447=100*4

[(x+7)*9]+3-447=400

[(x+7)*9]+3=400+447

[(x+7)*9]+3=847

(x+7)*9=847-3

(x+7)*9=844

x+7=844/9

x+7=93,777777777778

x=93,777777777778-7

x=86,777777777778