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valiyeva55
@valiyeva55
July 2022
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Помогите пожалуйста решить уравнения:
а) 8 * ( 4х + 4 ) = - 32
б) - 24 ( 7 - 9у) = - 48
в) - 7( 2 - 3х) = 56
г) ( 5 + 7а) * 15 = - 30
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GlebGor1998
Verified answer
А) 8 * (4х + 4) = -32 32х +32 = -32 32х = -32 -32 32х = -64 х = - 2
б) -24 (7 - 9у) = -48 - 168 + 216у = -48 216у = -48 +168 216у = 120
у = 120/216 у = 5/9
в) - 7( 2 - 3х) =56 -14 + 21х = 56 21х = 56 + 14 21х = 70 х = 10/3
г) (5 + 7а) *15 = - 30 75 +105а = -30 105а = -30 - 75 105а = -105 а = -1
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Answers & Comments
Verified answer
А) 8 * (4х + 4) = -32 32х +32 = -32 32х = -32 -32 32х = -64 х = - 2б) -24 (7 - 9у) = -48 - 168 + 216у = -48 216у = -48 +168 216у = 120
у = 120/216 у = 5/9
в) - 7( 2 - 3х) =56 -14 + 21х = 56 21х = 56 + 14 21х = 70 х = 10/3
г) (5 + 7а) *15 = - 30 75 +105а = -30 105а = -30 - 75 105а = -105 а = -1