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severdenko
@severdenko
July 2022
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Помогите решить уровнения. 1)(7х-24):12+26=31 2)(99-9у)*8+14=86 3)144-(х:11+21)*5=14
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SuperPahan
1)
(7х-24):12+26=31
(7х-24)=31*(12+36)
7х-24=1488
7х=1488+24
7х=1512
х=1512/7
х=216
2 votes
Thanks 4
SuperPahan
2)
(99-9у)*8+14=86
(99-9y)*8=86-14
(99-9y)*8=72
99-9y=9
-9y=9-99
-9y=-90 (умножаем на минус один)
9y=90
SuperPahan
y=10
severdenko
спасибо
SuperPahan
3)
144-(х:11+21)*5=14
(x:32)*5=14-144
(x:32)*5=-130
x:32=130:5
x:32=26
x=26*32
x=832
severdenko
спасибо
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Answers & Comments
(7х-24):12+26=31
(7х-24)=31*(12+36)
7х-24=1488
7х=1488+24
7х=1512
х=1512/7
х=216
(99-9у)*8+14=86
(99-9y)*8=86-14
(99-9y)*8=72
99-9y=9
-9y=9-99
-9y=-90 (умножаем на минус один)
9y=90
144-(х:11+21)*5=14
(x:32)*5=14-144
(x:32)*5=-130
x:32=130:5
x:32=26
x=26*32
x=832