Răspuns :
a - 2 x ( 25 x 15 ) =54 x ( 156 +63)
a - 2 x 375 = 54 x 219
a - 750 = 11826
a = 11826 + 750
a =12576.
a - 2 x 375 = 54 x 219
a - 750 = 11826
a = 11826 + 750
a =12576.
d-s=r
d=?
s=2×25×15
s=50×15
s=750
r=156+63×54
r=219×54
r=11826
d-s=r
d-750=11826
d=11826+750
d=12576
d=?
s=2×25×15
s=50×15
s=750
r=156+63×54
r=219×54
r=11826
d-s=r
d-750=11826
d=11826+750
d=12576