1-{[603-135÷(16-x÷3)]÷4+853}=9 100 000
-{[603-135÷(16-x÷3)]÷4+853}=
9 099 999 | •(-1)
[603-135÷(16-x÷3)]÷4+853=-9 099 999
[603-135÷(16-x÷3)]÷4=-9 100 852
603-135÷(16-x÷3)=-36 403 408
-135÷(16-x÷3)=-36 404 011
16-x÷3=-135 ÷ (-36 404 011)
16-x÷3=0,0000037083
-x÷3=0,0000037083-16
-x÷3=-15,9999962916
-x=-47,9999888748
x=47,9999888748
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