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115i
@115i
July 2022
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Решите уравнение:
а) 5 · (х – 7) = 3 · (х – 4) – 27
б) 3y + 2 · (2y – 3) = 8 – 7 · (y – 2)
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93931
А) 5*(x-7)=3*(x-4)-27 б)3y+2*(2y-3)=8-7*(y-2)
5x-35=3x-12-27 3y+4y-6=8-7y+14
5x-3x=-12-27+35 3y+4y+7y=8+14+6
2x=-4 14y=28
x=-2 y=2
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Answers & Comments
5x-35=3x-12-27 3y+4y-6=8-7y+14
5x-3x=-12-27+35 3y+4y+7y=8+14+6
2x=-4 14y=28
x=-2 y=2