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arianalovesjb
@arianalovesjb
August 2022
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7 Класс Алгебра. Помогите пожалуйста с заданием!!! Много баллов дам
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sedinalana
Verified answer
А
(x+1)/15-(x-2)/4=(4x+4-15x+30)/60=(34-11x)/60
б
(2-x)/12x²-(3x-2)/8x²=(4-2x-9x+6)/24x²=(10-11x)/24x²
в
1/x²-(x-2)/x=(1-x²+2x)/x²
г
(3x-5)/x-(3y-2)/y=(3xy-5y-3xy+2x)/xy=(2x-3y)/xy
д
(x-y)/xy²-(x-y)/x²y=(x²-xy-xy+y²)/x²y²=(x-y)²/x²y²
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Answers & Comments
Verified answer
А(x+1)/15-(x-2)/4=(4x+4-15x+30)/60=(34-11x)/60
б
(2-x)/12x²-(3x-2)/8x²=(4-2x-9x+6)/24x²=(10-11x)/24x²
в
1/x²-(x-2)/x=(1-x²+2x)/x²
г
(3x-5)/x-(3y-2)/y=(3xy-5y-3xy+2x)/xy=(2x-3y)/xy
д
(x-y)/xy²-(x-y)/x²y=(x²-xy-xy+y²)/x²y²=(x-y)²/x²y²