Answer:
x=75
Step-by-step explanation:
(Use order of operations(PEMDAS))
14(4)+28-12(5)
56+28-60
84-60
24
solution=24
75% of the teachers were first-year teachers
Step-by-step explanation:
the formula for percentage will be used for the problem
The percentage is given by:

Here
Total teachers = 57+19 = 76
First-year teachers = 57
So,

Hence, 75% of the teachers were first-year teachers
Keywords: Percentage, Percent
Learn more about percentage at:
#LearnwithBrainly
You multiply 5 x 3 Bc you multiplied the left side by 3. Hope this helps