Mistake

Nicol mistake when calculate in school. Instead of add number 20 subtract it.

What is the difference between the result and the right result?

Result

x =  -40

Solution:

a=n+20 b=n−20  x=b−a=(n−20)−(n+20) x=−2⋅20=−40a = n + 20 \ \\ b = n- 20 \ \\ \ \\ x = b-a = (n - 20) - (n + 20) \ \\ x= -2\cdot 20 = -40

Try another example


Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!





Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!
avatar




Tips to related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

You need to know the following knowledge to solve this word math problem:

Next similar math problems:

  1. I think
    numbers_49 I think a number. When I multiply it by five, and after that I subtract 477, I get the same number as if I multiplied it twice. What number do I think?
  2. I think number
    hats I think number.When I add 841 to it and subtract 157, I get a number that is 22 greater than 996. What number I thinking?
  3. What is missing (1000)
    red_minus What number is to add to get 1000?
  4. Addition of Roman numbers
    roman Added together and write as decimal number: LXVII + MLXIV
  5. Roman numerals 2+
    rome-italy_1 Add up the number writtens in Roman numerals. Write the results as a roman numbers.
  6. Seven times
    numberline_12 Which number seven times is just as higher as 27, how much is smaller than 29?
  7. Voting
    vote_2 400 employees cast their votes in a board member election that has only 2 candidates. 120 people vote for candidate A, while half of the remaining voters abstain. How many votes does candidate B receive?
  8. Integers
    calculator_mechanical May be the sum of two integers less than their difference?
  9. Write decimals
    numbers_34 Write in the decimal system the short and advanced form of these numbers: a) four thousand seventy-nine b) five hundred and one thousand six hundred and ten c) nine million twenty-six
  10. Roman numerals
    roman_1 Write numbers written in Roman numerals as decimal.
  11. Two numbers 6
    numbers_49 Fill two natural numbers a, b: 7 + blank- blank = 5
  12. Simple equation 10
    eq1_1 35= 7*3*x what is x?
  13. Eq1
    eq1_3 Solve equation: 4(a-3)=3(2a-5)
  14. Equatiom
    negativ_1 Solve equation with negatives: X/(-5) + 2 = -9
  15. Six te 2
    eq1 If 3t-7=5t, then 6t=
  16. Simple equation 8
    eq1 Solve the following equation: 36=-(1+7x)-6(-7-x)
  17. Equation with one variable
    eq1 Solve the following equation with one unknown: 5(7s + 5) =130