Could someone please check my work? I would really appreciate any help!

here are the instructions ~~
Write an equation to represent these real-life situations in which the variable is on the left side of the equation with an operation and a number. Then solve the equation showing the steps. Finally answer the question in a complete sentence.

7. Anne is seven years younger than her brother, Brandon. Anne is 23. Let B represent Brandon’s age.

B=23+7=30
B=30
Brandon is 30 years old.

8. Last Friday, the Cougars lost to the Tigers in basketball by 15 points. The Tigers scored 72 points. Let C represent the Cougars' score.

C=72-15=57
C = 57
Cougar’s score is 57

9. Mary scored 36 points, which is half as many points as Lashawna scored. Let L represent the points Lashawna scored.

L=36*2=72
L=72
Lashawna score is 72.

10. Joey owns a small bakery and today Phoebe has ordered c cookies. If Joey boxes the cookies by the dozen and has packed 20 boxes, how many cookies has Phoebe ordered? Let c represent the number of cookies.

c= 12*20=240
c=240
Phoebe ordered 240 cookies.

2 answers

they are all correct
okay thank you very much!!