16а + 7(2а-5) = 16а + 14а - 35 = 30а - 35
5/9 (-х) * 3/5 = -(5х*3)/9*5 = -х/3
5а - 7в - 2а - 8в = 3а - 15в
3(4х+2)-5= 12х + 6 - 5 = 12х+1
20в-2(в-3)+(3в-10)= 20в-2в + 6 + 3в-10=21в-4
mx+my-mc = m(x+y-c)
14y-8my = 2y(7-4m)
7b+3a+8b-5a-10b+2a=5b
8a+3a-2-5a+2=6a
7+6x-8=6x-1