(1/8•8/9х + 1/8•8) - (1/5•5/6х+1/5•1 2/3)=2
Производим сокращение и раскрывает скобки
1/9х+1-1/6х-1/3=2
1/9х - 1/6х= 2-1+1/3
х(1/9-1/6)=1 1/3
-1/18х = 1 1/3
Х = 4/3:(-1/18)
х = - 24
1) 4 х 50 х 17=200х17=3400
25х4 х123=100х123=12300
357х125х8=1000х357=357000
2) 240:30=8
8+2=10
240:10=24
3)27+5х=32
5х=5
х=1
225-4х=125
4х=100
х=25
X(1 -0,24 -7/15) =44 <=>
x(76/100 -7/15) =44 <=>
x(19/25 -7/15) =44 <=>
x((57-35)/75) =44 <=>
x*22/75 =44 <=>
x= 44*75/22 <=>
x= 150