1)
3 7 1 9+ 14+12 35
_ + __ +__ =__________=_____
8 12 2 24 24
2)
3 5 1 18- 15+4 7
__- ___+___=__________= ______
4 8 6 24 24
3) 35 7 35 24 5
______:_____=_____*_____=___= 5
24 24 24 7 1
<span>10801-x=5400
х=</span>10801-5400
х=5401
<span>1703+x=1213+490
</span>1703+x=1703
х=0
<span>x:3-18=12
</span>х;3=18+12
х:3=30
х=90
<span>5*x+80=690
</span>5*х=690-80
5*х=610
х=610:5
х=122
<span>x*8+120=280
</span>х*8=280-120
х*8=160
х=160:8
х=20.
Х=25/8*4/5:5/4=(25*4*4)/(8*5*5)=2