Răspuns : 1297
Explicatie pas cu pas :
[ 936 - ( 40 × 2 - a ) ] : [ 20 + ( 63 : 9 + 96 : 12 ) ] = 8
= [ 936 - ( 80 - a ) ] : [ 20 + ( 7 + 8 ) ] = 8
= [ 936 - ( 80 - a ) ] : ( 20 + 15 ) = 8
= [ 937 - ( 80 - a ) ] : 35 = 8
= 937 - ( 80 - a ) = 8 × 35 = 280
= 80 - a = 280 + 937 = 1217
= a = 1217 + 80 = 1297
a = 1297
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