Question

lucrati in perechi.aflati valoarea expresiei:E=100×a-b,stiind ca:a×42+720-720:9=1060 100-b:16+350:7=144

Answer 1

E = 100xa-b

ax42+720-720:9=1060
ax42+720-80=1060 /+80
ax42+720=1140 /-720
ax42 = 420 / :42
a =10


100-b:16+350:7=144
100-b:16+50=144 /-50
100-b:16 = 94
b:16 = 100-94
b:16 = 6
b = 16x6
b = 96

E = 100x10 - 96
E = 1000 -96
E = 904





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