(8+3x)(2y-1) = 16у -8 +6ху -3х (15a+27)(-5a-9) = -75а^2 - 135a-135a - 243 = -75 a^2 - 270a -243
(5а+5а)(27+9)
10а=36
а=36:10
а=0,36
(8+3x)(2y-1) = 16у -8 +6ху -3х (15a+27)(-5a-9) = -75а^2 - 135a-135a - 243 = -75 a^2 - 270a -243
(5а+5а)(27+9)
10а=36
а=36:10
а=0,36