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Emilia8093
a fost răspuns

1000-[5+2×(100+y×4)-124:4]=754


Afla nr. y

Răspuns :

1000-[5+2×(100+y×4)-124:4]=754
5+2(100+4y)-31=1000-754
5+200+8y-31=246
8y=246-5-200+31
y=72:8
y=9
Primăvară2017
1000-[5+2×(100+y×4)-124:4]=754
5+2×(100+y×4)-31=1000 - 754
5+2×(100+y×4)-31=246
5+2×(100+y×4)=246+31
5+2×(100+y×4)=277
2×(100+y×4)=277-5
2×(100+y×4)=272
100+y×4=272:2
100+y×4=136
y×4=136-100
y×4=36
y=36:4
y=9