Раскрыть скобки(6 класс) если можно, 1. a + ( - b + c) 2. a - ( - b - c) 3. m - ( n + m) 4. ( 6 + x ) - 1/3 5. - ( m + n) - ( - m + n ) 6. a - (-a - b + n ) 7. - ( - p - a) - ( - k + p) 8. - 2.9 - (-x + 9.7)

A+(-b+c) = a-b+c
a-(-b-c) = a+b+c
m-(n+m) = m-n-m = -n
(6+x) - 1/3 = 6+x-1/3 = 6-1/3+x = 18/3 - 1/3 + x = 17/3 + x = 5 2/3 +x
-(m+n) - (-m+n) = -m-n+m-n = -2n
a-(-a-b+n) = a+a+b-n = 2a+b-n
-(-p-a)-(-k+p) = p+a+k-p = a+k
-2,9 - (-х+9,7) = -2,9 + х - 9,7 = х -12,6

1. a + ( - b + c)=a-b+c; 2. a - ( - b - c)=a+b+c; 3. m - ( n + m)=m-n-m=-n; 4. ( 6 + x ) - 1/3 =5 3/3-1/3+x= 5 2/3+x; 5. - ( m + n) - ( - m + n )= -m-n+m-n=-2n; 6. a - (-a - b + n )= a+a+b-n=2a+b-n;/// 7. - ( - p - a) - ( - k + p)= p+a+k-p=a+k; 8. - 2.9 - (-x + 9.7)= -2,9+x-9,7=x-12,6