11/2х+1/2х=1 2/3; (6 3/4-х)*2 1/3=9 5/6; 3 4/5х-1 7/10х=3 1/2;

Question

Математика: 11/2х+1/2х=1 2/3; (6 3/4-х)*2 1/3=9 5/6; 3 4/5х-1 7/10х=3 1/2;

mayer3 · Accepted Answer

1)а+(b-c)=a+b-c
2)x-(y+2)=x-y-2    1)1,9(а+2)=1.9a+3.8
3)m-(-n-k)=m+n+k    2)3(а-1,7)=3a-5.1
4)9-(a+b+c)=9-a-b-c    3)-2(х-0,9)=-2x+1.8
5)x-(-3+y-z)=x+3-y+z     4)-3(1,6+y)=-4.8-3y
6)m+8+n+k)=m+8+n+k    5)1,3(a+b)=1.3a+1.3b
7)a-(b-c+d)=a-b+c-d 6)-4(x+y)=-4x-4y
8)x+(y-z+8)=x+y-z+8
9)m-(-2+n+k)=m+2-n-k

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