M+(-n)+p+(-k)=m-n+p-k
-x+(-y)+(-z)=-x-y-z
-ab+(-ac)+cd=-ab-ac+cd
-a+(-4c)+(-7)=-a-4c-7
-0,6a+(-11b)+3=-0.6a-11b+3
<span>-9a+(-2b)+(-5c)=-9a-2b-5c</span>
404778 : 5 - 404728 : 5 = (404778 - 404728) : 5 = 50 : 5 = 10
A=2*S/h
.....................
<span>5х-1,2=-7,4
5х=-7,4+1,2
5х=-6,2
х=-6,2:5
<u>х=-1,24</u>
</span>