Question

Aflati valoarea expresiei : E=100xa-10x b stiind ca a×42+720-720:9=1060. si 100 -b:16+350:7=144

Answer 1

a*42+720-80=1060
a*42+720=1060+80=1140
a*42=1140-720=420
a*42=420
a=420:42
a=10

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

E=100*a-10*b
E=100*10-10*96
E=1000-960
E=40