So represent missing number with x
x means unknown so
x+-1=+1
adding a negative means subtraction
x-1=1
you can do anything to an equation as long as you do it to both sides
add 1 to both sides
x+1-1=1+1
x+0=2
x=2
the number is 2
Answer:
See below in Bold.
Step-by-step explanation:
If he scored 76 points he must have answered 76/4 = 19 questions correctly.
If the total number of questions is q then our equation is q = 10 + 76/4
= 10 + 19 = 29 questions.
24 is what percent of 49? The answer to that is 48.98.
I think that its 12.5 percent.
