решите уровнение.срочно!!!!!!!!!!!!!!!!!!!!. Created by NK1904. matematika-ru

решите уровнение.срочно!!!!!!!!!!!!!!!!!!!!...

Fhre

Verified answer

Раскрываем скобки.
1)-9·(8-x)-4x= -2 2)-5·(-1+9x)-5x= -1 3)-6·(1-x)+4x= -4
-72+9x-4x= -2 5-45x-5x= -1 -6+6x+4x= -4
5x= -2+72 -50x= -1-5 10x= -4+6
5x=70 -50x= -6 10x=2
x=70/5 x= -6/-50 x=2/10
x=14. x= -3/-25    x=1/5
x= 0,12. x=0,2.

4)-8·(3+x)+x=4 5)-6= -9·(7+x)+4x
-24-8x+x=4 -6= -63-9x+4x
-7x=4+24 -6+63+9x-4x=0
-7x=28 57+5x=0
x=28/-7 5x= -57
x= -4. x= -57/5
  x= -11,4.

1 votes Thanks 1

sedinalana

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1
-72+9x-4x=-2
5x=-2+72
5х=70
х=70:5
х=14
2
5-45x-5x=-1
50x=5+1
50x=6
x=6/50
x=0,12
3
-6+6x+4x=-4
10x=-4+6
10x=2
x=0,2
4
-24-8x+x=4
7x=-24-4
7x=-28
x=-28:7
x=-4
5
-6=-63-9x+4x
5x=-63+6
5x=-57
x=-57:5
x=-11,4

0 votes Thanks 0

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