160 - x = 51*2
160 -x = 102
x = 160-102
x = 58

The LCM of x+3 and x-4 is x² - x - 12
Working out gives;

Simplify further using equations calculator to get the answer as attached below:
Equation of a horizontal line passing through point (-3, 8) is y = 8.
Answer:
I believe the answer to part A is 55. I just added the number of french speakers to the number of females and then subtracted 16. If that answer is correct, then the answer to part b is 68.75%
EFGH is twice the size of ABCD