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Alinarul
@Alinarul
August 2022
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Решите пожалуйста уравнения.
1)19-7х=20-3(х-5)
2)3х-10(2+х)=х+4
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Answers & Comments
gnomiha211
1)
19-7х=20-3(х-5)
19-7x=20-3x+15
-7x+3x= 20+15-19
-4x= 16
x= -4
2)
3х-10(2+х)=х+4
3x-20-10x=x+4
3x-10x-x=4+20
-8x=24
x= -3
1 votes
Thanks 1
Anna2017das
1) 19-7х=20-3х+15
19-20-15=-3х+7х
-16=4х
х=-4
2) 3х-20-10х=х+4
3х-10х-х=4+20
-8х=24.
х=-3
0 votes
Thanks 1
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Answers & Comments
19-7х=20-3(х-5)
19-7x=20-3x+15
-7x+3x= 20+15-19
-4x= 16
x= -4
2)
3х-10(2+х)=х+4
3x-20-10x=x+4
3x-10x-x=4+20
-8x=24
x= -3
19-20-15=-3х+7х
-16=4х
х=-4
2) 3х-20-10х=х+4
3х-10х-х=4+20
-8х=24.
х=-3