So, initially 240

-212

were empty:
this is :

12/4 is 4 so that's why i substituted it with 4.
now, later 27 1/3 were used so we add this tho the original empty space

=

=
which is the result!
Answer:
x= - 50/9
Step-by-step explanation:
multipy both equations by 12
9x+60=10
then move the constant to the right hand side and change it's sign
9x= 10 - 60
calculate difference
9x = -50
divide both sides by 9
x= - 50/9
Answer:
77
Step-by-step explanation:
7 (3 + 2*4) =
7 (3 + 8) =
7 (11) =
7 * 11 =
77
45 minutes = 3/4 hours
so his speed = 6 / 3/4 kph
= 8 km / h Answer