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ulyanavafina
@ulyanavafina
July 2022
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Реши уравнения!!!!!
а) -4(x-3)+2(5-x)=4
б) -(y-0,6)-0,3(-2y-0,8)=5
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jekadva
а)
-4(x-3)+2(5-x)=4
-4x+12+10-2x=4
-6x=12+10-4
6x=18
x=18:6
x=3
б)
-(y-0,6)-0,3(-2y-0,8)=5
-y+0,6+0,6y+0,24=5
0,4y+0,84=5
0,4y=5-0,84
0,4y=4,16
y=4,16:0,4
y=10,4
1 votes
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Answers & Comments
-4(x-3)+2(5-x)=4
-4x+12+10-2x=4
-6x=12+10-4
6x=18
x=18:6
x=3
б)
-(y-0,6)-0,3(-2y-0,8)=5
-y+0,6+0,6y+0,24=5
0,4y+0,84=5
0,4y=5-0,84
0,4y=4,16
y=4,16:0,4
y=10,4