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pavlusneva
@pavlusneva
August 2022
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* это умножение
Упростите выражение и найдите его значение при а= 2/3:
3 целых 5/6а - 2 целых 1 /3а
решите подромна уравнение ( 2/3х +18х) *24= 38
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Dan2407
Verified answer
3 5/6а - 2 1/3а
при а=2/3
3 5/6 * 2/3 - 2 1/3 *2/3 =(3 5/6-2 1/3)*2/3=(23/6-7/3)*2/3=(23/6-14/6)*2/3=9/6*2/3=3/2*2/3=1
( 2/3х +18х) *24= 38
16х+432х=38
448х=38
х=38:448
х=38/448=19/224
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Answers & Comments
Verified answer
3 5/6а - 2 1/3апри а=2/3
3 5/6 * 2/3 - 2 1/3 *2/3 =(3 5/6-2 1/3)*2/3=(23/6-7/3)*2/3=(23/6-14/6)*2/3=9/6*2/3=3/2*2/3=1
( 2/3х +18х) *24= 38
16х+432х=38
448х=38
х=38:448
х=38/448=19/224