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wanyu
@wanyu
June 2022
2
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Найдите корень уравнения :
1/3x+7=-2x
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AlexKolm2015
1/3x+7=-2x
1/3x+2x=-7
7/3x=-7 |*3/7
x=-3
3 votes
Thanks 1
NewRaccoon
1/3x+7=-2x
Умножим на 3
1/3х*3+7*3=-2х*3
х+21=-6х
х+6х=-21
7х=-21
х=-21/7
х=-3
3 votes
Thanks 1
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Answers & Comments
1/3x+2x=-7
7/3x=-7 |*3/7
x=-3
Умножим на 3
1/3х*3+7*3=-2х*3
х+21=-6х
х+6х=-21
7х=-21
х=-21/7
х=-3