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808-[7+5×(4+3×s)-1]÷8=801

Răspuns :

808-[7+5×(4+3×s)-1]: 8=801
[ 7 + 5x( 4 + 3s) - 1 ] :8 = 808 - 801

[ 7 + 5x( 4 + 3s) - 1 ] :8  = 7
7 + 5x( 4 + 3s) - 1 = 7x 8
7 + 5x( 4 + 3s) - 1 = 56
5 x ( 4 + 3s) = 56 +1 - 7
5 x ( 4 + 3s ) = 50
4 + 3s = 50 :5
4 + 3s = 10
3s = 10 - 4
3s = 6
s = 6:3
s = 2
808-[7+5*(4+3*s)-1]:8=801
808-[7+5*(4+3*s)-1]=801*8
808-[7+5*(4+3*s)-1]=6408
[7+5*(4+3*s)-1]=6408-808
7+5*(4+3*s)-1=5600
7+5*(4+3*s)=5600+1
7+5*(4+3*s)=5601
5*(4+3*s)=5601-7
5*(4+3*s)=5595
(4+3*s)=5595:5
4+3*s=1119
3s=1119-4
3s=1115
s=1115:5
s=223