Răspuns :
a) (27+2x):27=27 27+2x=27x27=729 2x=729-27=702 x= 72:2 x=351
b) (100-x:75)x35+1=876 (100-x:75)x35=876-1=875 100-X:75=875:35=25 X:75=100-25=75 X=75x75 X= 5625
Răspuns:
(27+2x):27=27
27+2x=27*27
27+2x=729
2x=729-27
2x=702
X=702:2
X=351
(100-x:75)*35+1=876
(100-x:75)*35=876-1=875
100-x:75=875:35=25
X:75=100+25=125
X=125*75
X=9375