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Анастасия907
@Анастасия907
July 2022
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Решить уравнения.
А) -0,01x=1
Б) 0,1(x-8)=0,9
В) -9/14z+2=4 4/7
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Answers & Comments
Banabanana
Verified answer
А) -0,01x=1
0,01х = -1
х = (-1)/0,01
х = -100
Б) 0,1(x-8)=0,9
0,1х - 0,8 = 0,9
0,1х = 0,9 + 0,8
0,1х = 1,7
х = 1,7/0,1
х = 17
В) -9/14z+2=4 4/7
9/14z - 2 = -4 4/7
9/14z = -4 4/7 + 2
9/14z = -2 4/7
9/14z = -18/7
z= (-18/7) : 9/14
z = (-18/7)*14/9
z=-4
3 votes
Thanks 2
vmaluga2011
Verified answer
-0,01х=1
х=1:(-0,01)
х=-100
0,1(х-8)=0,9
х-8=0,9:0,1
х-8=9
х=9+8
х=17
-9/14z+2=4 4/7
-9/14z=4 4/7-2
-9/14z=2 4/7
z=2 4/7:(-9/14)
z=18/7:(-9/14)
z=-4
1 votes
Thanks 1
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Answers & Comments
Verified answer
А) -0,01x=10,01х = -1
х = (-1)/0,01
х = -100
Б) 0,1(x-8)=0,9
0,1х - 0,8 = 0,9
0,1х = 0,9 + 0,8
0,1х = 1,7
х = 1,7/0,1
х = 17
В) -9/14z+2=4 4/7
9/14z - 2 = -4 4/7
9/14z = -4 4/7 + 2
9/14z = -2 4/7
9/14z = -18/7
z= (-18/7) : 9/14
z = (-18/7)*14/9
z=-4
Verified answer
-0,01х=1х=1:(-0,01)
х=-100
0,1(х-8)=0,9
х-8=0,9:0,1
х-8=9
х=9+8
х=17
-9/14z+2=4 4/7
-9/14z=4 4/7-2
-9/14z=2 4/7
z=2 4/7:(-9/14)
z=18/7:(-9/14)
z=-4