Determina y din egalitatea:1000-[5+2x(100+yx4)-124:4]=754

Răspuns :

1000-[5+2x(100+yx4)-124:4]=754
1000-(5+200+8y-31)=754
1000-(8y+205-31)=754
1000-(8y+174)=754
8y+174=1000-754
8y+174=246
8y=246-174
8y=72
y=72:8
y=9