Упростите 5a(2x-1)-(2x+1)(a-3)

Question

Упростите 5a(2x-1)-(2x+1)(a-3)

Answer 1

10ax-5a-(2ax-6x+a-3)=10ax-5a-2ax+6x-a+3=8ax-6a+3
Вроде так)

Answer 2

5a(2x-1)-(2x+1)(a-3) = 10ax-5x-(2ax-6x+a-3) = 10ax-5x-2ax+6x-a+3 = 8ax-6a-6x+3