109*(81-75):2+504:3=
109*6:2+168=
654:2+168=
327+168=495
100*9-[62*(8+1-1)]:8+162=
900-(62*8):8+162=
900-494:8+162=
900-62+162=1000
(640+640:8):90=
(640+80):90=
720:90=8
AL DOILEA
t=trandafiri
3t+(3t+4t)=40
3t+7t=40
10t=40
t=4lei
un copil a platit 3*4=12lei si celalalt 7*4=28 (28+12=40lei)
AL TREILEA
x+y=142
y+z=90
x+z=146
x+y+y+z+x+z=142+90+156
2(x+y+z)=388
x+y+z=388:2=194
142+z=194 z=194-142 z=52
x+90=194 x=194-90 x=104
y+146=194 y=194-146 y=38
AL PATRULEA
1.Cate ciresesunt?
9*4=36
2.Cate viine sunt?
4*6=24
3.Care plase de cirese sunt?
36:6=6
4.Ca te plase de visine sunt?
24:3=8
5.Cate plase sunt in total?
8+6=14
AL CINCILEA
X+X+1=15
2X=15-1
2X=14
X=7 Numerele sunt 7 si 8
BAFTA