Answer:
50 + 5
Step-by-step explanation:
Answer:
25-2x
Step-by-step explanation:
(7x2+6)-(2x_5)
(14+6)-2x+5
20_2x+5
These numbers are "a" and "b".
Sum is 64, so
a+b=64
Difference is 42 so
a-b=42
So you've got:

When a+b=64 and a=53 you've got:
53+b=64
b=11
So these numbers is 53 and 11.
A parallelogram has four sides with opposite sides being congruent. The formula for finding the perimeter is Side A + Side B + Side A + Side B