A volunteer made m muffins for a bake sale. After selling 28 muffins, 21 remained. The equation m - 28=21 represents the situation. What is the first step to writing an equivalent equation to solve m - 28 = 21?

okey so the slope is -3/5 and the y -intercept is 7/5

hope this if needed hmu

a

step-by-step explanation:

given the 2 equations

- x + y = - 2 → (1)

2x - 3y = 4 → (2)

multiplying (1) by 2 and adding to (2) will eliminate the x- term

- 2x + 2y = - 4 → (3)

add (2) and (3) term by term

(2x - 2x) + (- 3y + 2y) = (4 - 4), simplifying gives

- y = 0 ⇒ y = 0

substitute y = 0 in either of the 2 equations for corresponding value of x

substituting in (2) gives

2x = 4 ( divide both sides by 2 )

x = 2

solution is (2, 0 ) → a

i am so sorry , i have no idea but i want points so i won't be a beginner anymore