Answer:
-7x+24
Step-by-step explanation:
(2*2-3x+7) - (-3*2+4x-7)
11-3x+13-4x
-7x+24
Answer:
or 
Step-by-step explanation:
Given







Required
Determine the probability of selecting a brown ball
This is calculated as thus:

Substitute values for Brown and Total

The answer can be in fraction or solved further as;

Answer:
40
Step-by-step explanation:
y+80 = 3y
80 = 2y
y = 40