(3x+1)(8x-7)-(4x-1)(6x-3)=15
24x²+8x-21x-7-(24x²-6x-12x+3)=15
24x²-13x-7-24x²+18x-3=15
5x=15+10
5x=25 |÷5
x=5.
Ответ: x=5.
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(3x+1)(8x-7)-(4x-1)(6x-3)=15
24x²+8x-21x-7-(24x²-6x-12x+3)=15
24x²-13x-7-24x²+18x-3=15
5x=15+10
5x=25 |÷5
x=5.
Ответ: x=5.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!