Question

Упростите выражения: а) 3*(x-1)+(x-2)-x=? б) 5n-3*(n+2)+(n-6)=? в)m-(2m-6)+3*(m-3)=? г)2*(3x+1) -(x-2)-3x=?

Answer 1

а)3*(х-1)+(х-2)-х=3х-3+х-2-х=3х-5
б)5n-3*(n+2)+(n-6)=5n-3n-6+n-6=3n-12
в)m-(2m-6)+3*(m-3)=m-2m+6+3m-9=2m-3
г)2*(3x+1)-(x-2)-3x=6x+2-x+2-3x=2x+4

Answer 2

а) 3*(x-1)+(x-2)-x = 3x - 3 + x - 2 - x = 3x + x - x - 3 - 2 = 3x - 5

б) 5n-3*(n+2)+(n-6) = 5n - 3n - 6 + n - 6 = 5n - 3n + n - 6 - 6 = 3n - 12

в) m-(2m-6)+3*(m-3) = m - 2m + 6 + 3m - 9 = m - 2m + 3m + 6 - 9 = 2m - 3

г) 2*(3x+1)-(x-2)-3x = 6x + 2 - x + 2 - 3x = 6x - x - 3x + 2 + 2 = 2x + 4