4(2x-3)-5(3x-2)=9x-26
8x-12-15x+10=9x-26
8x-15x-9x=12-10-26
-16x=-24
x=1,5
В m^3 раза увеличится , т.к V куба = a^3
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{2x-3y=9
{x+2y=1 | -2
{2x-3y=9
{-2x-4y= -2
2x-2x-3y-4y=9-2
-7y=7
y= -1
x+2*(-1)=1
x-2=1
x=1+2
x=3
Ответ: (3; -1).