Ariana found an awesome deal on a new backpack when she went back to school shopping bag bag originally cost be dollars but it was on sale for 75% off 1 - 0.75b
75b
0.25b
B - 0.75b

try b-0.75b

Step-by-step explanation:

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: