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настя087952
@настя087952
July 2022
2
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решите уравнения : (z-2)+(z-1)+z=-3 ; 21+ (20-4x)-(11-2x)=0 ; 2u-3(7-2u)=3 ; 12-y =5(4-2y)+10 ; 2-2(x-8)=4x-4
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arturu
Z-2+z-1+z=-3
3z-3=-3
3z=0
z=0
-------------
21+20-4x-11+2x=0
30-2x=0
-2x=30
x=15
--------------
2u-21+6u=3
8u=24
u=3
----------------
12-y=20-10y+10
-y+10y=20+10-12
9y=18
y=2
---------------
2 votes
Thanks 6
arturu
последнее не правильно списал наврное
Анна0603
2-2x+16=4x-4 ; 2x=-22 ; x=-11
arturu
2-2x+16-4x+4=0
arturu
-6x=-22
arturu
x=22/6
arturu
x=11/3
Анна0603
2u-21+6u=3
8u=24
u=8
-----------------------
12-y=20-10y+10
12-y=30-10y
9y=18
y=2
0 votes
Thanks 0
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Answers & Comments
3z-3=-3
3z=0
z=0
-------------
21+20-4x-11+2x=0
30-2x=0
-2x=30
x=15
--------------
2u-21+6u=3
8u=24
u=3
----------------
12-y=20-10y+10
-y+10y=20+10-12
9y=18
y=2
---------------
8u=24
u=8
-----------------------
12-y=20-10y+10
12-y=30-10y
9y=18
y=2