Question

Rezolvati exercitiile: z+(8×9-4×7)=10×10........1000-a=(475+7×3).....b-175=9×6+7×8.....a=145b=a-17 c=a+b

Answer 1

z+(72-28)=100
z+44=100
z=100-44
z=56
1000-a=(475+21)
1000-a=496
a=1000-496
a=504
b-175=54+56
b-175=110
b=110+175
b=285
la celelalte nu inteleg