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diana987
@diana987
July 2022
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решить уравнение. 1,4(3-х)-0,9(х+2)=4,7
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bekarys200003
4,2-1,4x-0,9x-1,8=4,7
2,4-2,3x=4,7
-2,3x=2,3
x=-2,3/2,3
x=-1
1 votes
Thanks 1
bekarys200003
Правильно?
Oneginka
1.4*3=4.2
diana987
должно получится -1
Oneginka
4.2-1.4x-0.9x-1.8=4.7
-1.4x-0.9x=4.7-4.2+1.8
-2.3x=2.3
x=-(2.3\2.3)
x=-1
1 votes
Thanks 2
diana987
спасибо )
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Answers & Comments
2,4-2,3x=4,7
-2,3x=2,3
x=-2,3/2,3
x=-1
-1.4x-0.9x=4.7-4.2+1.8
-2.3x=2.3
x=-(2.3\2.3)
x=-1