Question

4+[4-(4+4:4x4-4)+a]:4=8

Answer 1

Răspuns:  a = 16

Explicație pas cu pas:

4 + [ 4 - ( 4 + 4 : 4 × 4 - 4 ) + a ] : 4 = 8

[ 4 - ( 4 + 1 × 4 - 4 ) + a ] : 4 = 8 - 4

[ 4 - ( 8 - 4 ) + a ] : 4 = 4

4 - 4 + a = 4 × 4

0 + a = 16

a = 16

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Verific:

4 + ( 4 - 4 + 16 ) : 4 = 4 + 16 : 4 = 4 + 4 = 8