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Mashka11111111
@Mashka11111111
August 2022
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Решите уравнение:
7(4-3х)-(8.5-х)=4-3(х-8)
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zhenyaM2002
Verified answer
7(4-3х) - (8,5-х)= 4-3(х-8)
28 - 21х - 8,5+х= 4-3х+24
-20х +3х= 28-28+8,5
-17х= 8,5
х= 8,5 : (- 17 )= - (17/2 * 1/17 )
х= -1/2 =-0,5
Проверим:
7 * ( 4 - 3* (-0,5) ) - (8,5 - ( -0,5) = 4 - 3 (-0,5 -8 )
7* (4+1,5) - 9= 4- 3 *( -8,5)
38,5-9 = 4 +25,5
29,5 = 29,5
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Answers & Comments
Verified answer
7(4-3х) - (8,5-х)= 4-3(х-8)28 - 21х - 8,5+х= 4-3х+24
-20х +3х= 28-28+8,5
-17х= 8,5
х= 8,5 : (- 17 )= - (17/2 * 1/17 )
х= -1/2 =-0,5
Проверим:
7 * ( 4 - 3* (-0,5) ) - (8,5 - ( -0,5) = 4 - 3 (-0,5 -8 )
7* (4+1,5) - 9= 4- 3 *( -8,5)
38,5-9 = 4 +25,5
29,5 = 29,5