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beberexha
@beberexha
July 2022
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Решите
2x-3=4
5-2/5x=11
очень нужно
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2407Alexa
2x-3=4
2x=4+3
2x=7|÷2
x=7/2
x=3,5
Проверка:
2×3,5-3=4
7-3=4
4=4- истина.
5-(2/5)х=11
-(2/5)х=11-5
-(2/5)х=6|×(-5)
2х=-30|÷2
х=-15
Проверка:
5-(2/5)×(-15)=11
5+(2/5)×5×3=11
5+2×3=11
5+6=11
11=11- истина.
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Answers & Comments
2x=4+3
2x=7|÷2
x=7/2
x=3,5
Проверка:
2×3,5-3=4
7-3=4
4=4- истина.
5-(2/5)х=11
-(2/5)х=11-5
-(2/5)х=6|×(-5)
2х=-30|÷2
х=-15
Проверка:
5-(2/5)×(-15)=11
5+(2/5)×5×3=11
5+2×3=11
5+6=11
11=11- истина.