7-(2x-2) ⋅ (4x+1)=2x⋅(5-4x)

7-8x^2-2x+8x+2=10x-8x^2-8x^2+8x^2+6x-10x=-7-2-4x=-9x=2.25

7-(2x-2) ⋅ (4x+1)=2x⋅(5-4x)7-(8x^2-8x+2x-2)=10x-8x^27-8x^2+6x+2=10x-8x^210x-6x=7+24x=9x=9/4x=2,25Ответ:x=2,25