<span>5 - х/2 - х/4 = х+ х/3 домножим всё на 12
60 - 6x - 3x = 12x + 4x
60 = 16x + 9x
25x = 60
x = 2,4
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-4(x+2)+3(x-1)-2=5(x-2)+6
4(x-y)+3(x-y)^2=(x-y)(4+3(x-y)).
40ab+2(25a^2-20ab+4b^2)=40ab+50a^2-40ab+8b^2=50a^2+8b^2
1)3х-1\х^2+х-9\3*х
3х-1\х^2+х-3х
-1+х^3\х^2
2)1\2a-b-1\2a+b
0
3)5\c+3-5c-2\c^2+3c
5\c+3-5c-2\c^2+3c
5\c+3-2c-2\c^2
5c+3c^2-2c^3-2\c^2