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Calculati : (6×a)-25=23

Răspuns :

(6 x a ) - 25 = 23
( 6 x a ) = 25 + 23
( 6 x a ) = 48 
a = 48 : 6 
a = 8.
(6×a)-25=23
6a−25+25=23+25
6a=48
6a/6=48/6
a=8