Question

Znajdz zawartość nieznanej liczby .
x-(5/10+1/4)=10
x=
z-3/5=2/3+1/5
z=
z-7/99=2 2/3
z=

Answer 1

X-(5/10+1/4)=10

x- (10/20 + 5/20) = 10

x- 15/20 = 10  (skracam ułamek przez 5)

x - 3/4= 10

x= 10 + 3/4

x= 10 i 3/4




z-3/5=2/3+1/5

z - 9/15 = 10/15 + 3/15

z - 9/15 = 13/15

z= 13/15 + 9/15

z= 22/15

z= 1 i 7/15




z-7/99=2 i 2/3

z - 7/99 = 2 i 66/99

z=2 i 66/99 + 7/99

z= 2 i 73/99

Answer 2

X-(2/4+1/4)=10
x-3/4=10
x=10+3/4
x=10 i 3/4

z-3/5=2/3+1/5
z=10/15+3/15+9/15
z=22/15
z=1 i 7/15

z-7/99=2 2/3
z=2 66/99+7/99
z=2 73/99