0,6(3-4у)-0,9(у-1)=1,9-2,3у; 0,6(х-3)-0,5(х+4)=-1,8; 5/6=10/2х-3. Created by Tasya111111. matematika-ru

2х-3...

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0,6(3-4у)-0,9(у-1)=1,9-2,3у; 0,6(х-3)-0,5(х+4)=-1,8; 5/6=10/2х-3

Answers & Comments

ekata90 1)0,6(3-4у)-0,9(у-1)=1,9-2,3у
1,8-2,4y-0,9y+0,9=1,9-2,3y
-2,4y-0,9y+2,3y=1,9-1,8-0,9
-y=-0,8
y=0,8
2)0,6(х-3)-0,5(х+4)=-1,8
0,6x-1,8-0,5x-2=-1,8
0,6x-0,5x=-1,8+1,8+2
0,1x=2
x=2/0,1
x=20

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