Answer:
12 pages per minute
Step-by-step explanation:
60 pages are being printed in 5 minutes.
60 pages/5 minutes = 12 pages/minute
Times bottom equation by 3 and top by 2 to get the same coefficient of x
6x-6y=60
6x+3y=33
Minus the bottom by the top
-9y=27
y=-3
substitute this in to one of the equations
2x -3 = 11
add 3 to both sides
2x=14
x=7
The first part of the answer is 20x+9
Second part is 4a-6b
Answer:b x (3a+c)
Step-by-step explanation:
Collect like terms
3ab + 3cb-2bc
3ab+cb
Factor out b from the expression
b x(3a+c)
Answer:
z / 7
Step-by-step explanation:
C = O / H
O = z
H = 7