Answer:
256
Step-by-step explanation:
64(15-1x2-9)
64(15-2-9)
64 x 4
256
1 foot = 12 inches (you're supposed to know this)
so
2 feet = 24 inches
and
3 feet = 36 inches .
8/3 as a mixed fraction is 2_2/3
If the '7t' is supposed to be '7y', then the answer is below
(4y+8)-(7y-12)=11
distribute the negative into the second parenthesis
4y+8-7y+12=11
combine like terms
-3y+20=11
subtract the 20 from both sides
-3y=-9
divide by -3 on both sides
y=3
if it is supposed to be '7t', I'm not sure if there's enough information