Answer:
1
Explanation:
−((10)(2)−(2)(8)+(5)(−1))
= −(20−(2)(8)+(5)(−1))
= −(20−16+(5)(−1))
= −(4+(5)(−1))
= −(4+−5)
= −(−1)
= 1
- Mordancy.
Method 1:
Look at the picture.
is greater than 

Method 2:
Find the common denominator:
multiples of 7: 0, 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, ...
multiples of 9: 0, 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, ...
63 = 7 · 9


therefore

The answer is -40 but I don't remember how to calculate that, sorry.
Move all terms to the left side, and set equal to zero. Then set each factor equal to zero.
n = 5my/m+1