.................................
7050. 7049........7050........7051
18200. 18199........18200....18201
19999. 19998 ...19999........20000
14799. 14798....14799....14800
<span>8000. 7999...........8000.............8001
199690 199689.........199690..........199691
10000. 9999..........10000........10001
49999. 49998.........49999.........50000</span>
<span>а)
4,3+7,9-2,3+2,1=(4,3-2,3)+(7,9+2,1)=2+10=12
б) 5/6·0,04-5/6·1,04= 5/6·( 0,04 - 1,04)=5/6·(-1)=-5/6
решите уравнения
а)3х-2=0
3x=2
x=2/3
б)7х+1,5=10х-3</span>
7x-10x=-1,5-3
-3x=-4,5
x=1,5
0,5х*(-2,4у)=-1,2ху
-3/8*4/11*(-2/3m)=-3/22*(-2/3m)=1\11m=m\11
-3\4x+23\24x-1\3x=x(-3\4+23\24-1\3)=x(-9\12-4\12+23\24)=x(-13\12+23\24)=x(-26\24+23\24)=x(-3\24)=-1\8x
0,4*(0,9-5\7x)-0,9*(0,4-1 3\7x)=0,36-2\7x-0,36+1 2\7x=0.36-0,36+1 2\7x-2\7x=x
<span>3(5m-4m)-4(3m-2n)=3*m-12m+8n=-9m+8n=-9(-0,2)+8*0,7=1,8+5,6=7,4
</span><span>0,6z-2/9z=-3,4
</span>z(3\5-2\9)=-3\4
z*17\45=-3\4
z=-3\4:17\45
z=-135\68
z=-1 67\68