Answer:
Step-by-step explanation:
x-y=7
-3x+9y=-39
Divide the second equation by 3
-x +3y = -13
Add this to the first equation
x-y=7
-x +3y = -13
----------------------
0x +2y = -6
Divide by 2
2y/2 = -6/2
y = -3
Now find x
x-y = 7
x -(-3) = 7
x+3 = 7
Subtract 3 from each side
x = 4
(4,-3)
Or by substitution
x-y=7
solve for x
x = 7+y
-3x+9y=-39
Substitute y+7 in for x
-3(7+y) +9y = -39
Distribute
-21 -3y +9y = -39
Combine like terms
-21 +6y = -39
Add 21 to each side
6y = -18
Answer:
Mmmmmmmmmmmmm.............
Step-by-step explanation:
MI no sabo amigo perdon
7x-3=60
7x=63
x=9
11y+5=60
11y=55
y=11
hope this helps!!!
Answer: The answer is the other guys thing
Step-by-step explanation:
Answer:
Total amount reimbursed / Total daily budget ;
7 days
Step-by-step explanation:
Given the following :
Amount reimbursed = $1,750
Amount paid for food and lodging = $150/ day
Amount paid for gas = $100 / day
A) Equation to get the number of days on the trip:
Total amount reimbursed / Total daily budget
B.) Total daily budget = $(150 + 100) = $250/ day
Number of days :
(Total amount reimbursed / Total daily budget)
($1,750 / $250)
= 7 days
