Answer:
B. Neither is a solution
Step-by-step explanation:
24-x=20
-x=20-24
-x = - 4
X=4
B
Substitute each value of x into the left side of the equation and if equal to the right side then it is a solution.
x = 3
24 - 3 = 21 ≠ 20 ← not a solution
x = 7
24 - 7 = 17 ≠ 20 ← not a solution
