Question

ajudem minha filha por favor

Answer 1

a) a-b=-3-2=-5

b)b=c=2+1/2=2,5

c)bxc+a=2x1/2+(-3)=1-3=-2

d)c+a=1/2+(-3)=1/2-3=-2,5

Answer 2

5)A. (a-b) = -3-2=-5; B) (b+c) = 2 + 1/2= (4+1)/2= 5/2; C) b.c + a = 2.1/2-3= 1-3= -2;; D) c +a = 1/2 - 3 = (1-6)/2 = -5/2; 6) x+17 = 3x-1; 17+1= 3x-x; 18= 2x; 2x=18; X= 18/2; x=9