Răspuns :
Răspuns:
[( 58 × a -80) : 25] × 64 = 1280
( 58 × a - 80) : 25 = 1280 : 64
( 58 × a - 80) : 25 = 2
58 × a - 80 = 2 × 25
58 × a - 80 = 50
58 × a = 50 + 80
58 × a = 130
a = 130 : 58
a = 2,2413793103
Răspuns:
[( 58 × a -80) : 25] × 64 = 1280
( 58 × a - 80) : 25 = 1280 : 64
( 58 × a - 80) : 25 = 2
58 × a - 80 = 2 × 25
58 × a - 80 = 50
58 × a = 50 + 80
58 × a = 130
a = 130 : 58
a = 2,2413793103