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Ordinea efectuarii operatiiolor cu nr necunoscut
g. 40+90:[9+48:(a+6)]=46
h.[(38Xa+120):25X54]-980=100


Răspuns :

g)90:[9+48:(a+6)]=6
9+48:(a+6)=90:6
9+48:(a+6)=15
48:(a+6)=6
a+6=48:6
a+6=8
a=2

h)(38×a+120):25×54=1080
(38×a+120):25=1080:54
(38×a+120):25=20
38×a+120=500
38×a=500-120
38×a=380
a=380:38
a=10
Vezi atas, te rog!
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