Question

__- 7/21=1/11           
__+1/2 = -5/20  
7/6- __=3/2
porfa me podrian ayudar con esta operacion q numero falta?? plisss

Answer 1

x - 7/21 = 1/11
convirtiendo las dos fracciones a un comun denominador ( 21*11 = 231)

x- 77/231 = 21 /231
98 /231 - 77 /231 = 21 /231
21 /231 = 21/231
1/11 = 1/11
x= 98/231 = 14/33

y + 1/2 = -5/20
convirtiendo 1/2 a y/20 = 10/20
y + 10/20 = -5/20
-15/20 + 10/20 = -5/20
-5/20 = -5/20
y = -15/20 = - 3/4

7/6 - z =3/2
convirtiendo 3/2 a x/6 ; 3/2 = 9/6
7/6 - z = 9/6
7/6 - (-2/6) = 9/6
7/6 + 2/6 = 9/6
9/6 = 9/6
z= - 2/6 = -1/3