(2х-1)(15+9х)-6х(3х-5)=87
(14х-1)(2+х)=(2х-8)(7х+1)
(х+10)(х-5)-(х-6)(х+3)=16
(3х+7)(8х+1)=(6х-7)(4х-1)+93х
(14х-1)(2+х)=(2х-8)(7х+1)
(х+10)(х-5)-(х-6)(х+3)=16
(3х+7)(8х+1)=(6х-7)(4х-1)+93х
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Answers & Comments
60x=72
x=1,2
2) 28х-2+14х^2-x=14x^2-56x+2x-8
27x+54x=2-8
81x=-6
x=-2/27
3) x^2+10x-5x-50-x^2+13x-6x-78=16
12x=144
x=12
4) 24x^2+56x+3x+7=24x^2-28x-6x+7+93x
59x+7=59x+7
0=0
вычисления лучше проверь, могла накосячить