Răspuns :
556- (8×t + 4) / (18/9)= 48
556-(8×t+4)/2= 48
556- (8×t+4) = 48×2
556- (8×t +4) = 96
8×t + 4 = 556-96
8×t +4 = 460
8×t = 460-4
8×t = 456
t= 456/8
t= 57
556-(8×t+4)/2= 48
556- (8×t+4) = 48×2
556- (8×t +4) = 96
8×t + 4 = 556-96
8×t +4 = 460
8×t = 460-4
8×t = 456
t= 456/8
t= 57
556-(8xt+4):(9+9:9-0)=2x3x4x2
556-(8xt+4):(9+1-0)=6x8
556-(8xt+4):10=48
556-(8xt+4)=48x10
556-(8xt+4)=480
8xt+4=556-480
8xt+4=76
8xt=76-4
8xt=72
t=72:8
t=9