sinxn
contestada

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ВАРИАНТ 39
4-5x=6-6x
2(4x+5)= 7x-1
7x - 12 = 4x + 9(2x – 3)
4.
47x-7(4x-3) = 4(5x-2)
5.
7x-3(3x+5) = 1-4(4x-3)
6. 8(x - 2 ) + (3x-3) = 11x - 19