Răspuns:
54) [(a-36972):4+130965]-112995=31436
(a-36972):4+130965=31436+112995
(a-36972):4=144431-130965
(a-36972):4=13466
a-36972= 13466x4
a-36972=53864
a=53864+36972
a=90836
55) 200-(64+ax12+44)=2x(50-48+65-45)
200- (108++ax12)=2x(2+20)
200- (108+ax12)=2x22
200-44=108+ax12
156=108+ax12
156-108=4x12
48=ax12
a=48:12
a=4
Explicație pas cu pas:
