Question

Раскройте скобки и упростите выражение. 1)a-(b+a)= 2)-(m-n)-n= 3)c+(-c+d)= 4)(a+1,6)-(a+2,4)= 5)-(3,4-x)+(-x+1,6)= 6)-(x-2,7+y)-(6,5-x)=

Answer 1

1)a-(b+a)=a-b-a=-b
2)-(m-n)-n= - m+n-n = -m
3)c+(-c+d)=c-c+d=d
4)(a+1,6)-(a+2,4)=a+1.6-a-2.4 = 1.6-2.4 = -0.8
5)-(3,4-x)+(-x+1,6)=-3.4+x-x+1.6 = -3.4 +1.6 = -1.8
6)-(x-2,7+y)-(6,5-x)= -x+2.7-y-6.5+x= -3.8-y

Answer 2

1) a - (b + a) = a - b - a = -b 2) - (m - n) - n = -m + n - n = -m 3) c + (-c + d) = d 4) (a + 1.6) - (a + 2.4) = a + 1.6 - a - 2.4 = -0.8 5) - (3.4 - x) + (-x + 1.6) = -3.4 + x - x + 1.6 = -1.8 6) - (x - 2.7 + y) - (6.5 - x) = -x + 2.7 - y - 6.5 + x = -4.8 - y