Answer:

Step-by-step explanation:
We are given with two equations
first equation is 
second equation is

we find the result of subtracting two equation
subtract the second equation from the first, so
first equation - second equation, multiply second equation by -1 and then add it with first equation


Now add both equations, we get

Answer:
$18.75
Step-by-step explanation:
11.25 - 10.50 = 0.75
0.75 • 25 = 18.75
Answer:
21
Step-by-step explanation:
(9x2 + 6x – 7) + (-9x - 5) = 21
Answer:
22873
Step-by-step explanation:
you have to put the value from 6-94 in n the given equation 5n+7.
for e.g= (5×6+7)+(5×7+7)+(5×8+7)+ _____ so on