Number

Determine unknown number if you know that difference between five times and triple of number is 42.

Correct result:

x =  21

Solution:


5x-3x = 42

5•x-3•x = 42

2x = 42

x = 21

Our simple equation calculator calculates it.



We would be pleased if you find an error in the word problem, spelling mistakes, or inaccuracies and send it to us. Thank you!






Showing 0 comments:
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:

  • Father and son
    father_son_1 Father is 44 years old, his son 16 years. Determine how many years ago was the father five times older than the son.
  • Seven times
    numberline_12 Which number seven times is just as higher as 27, how much is smaller than 29?
  • Jam cakes
    buchty Mom baked a third of plum jam cakes, one third cheesecakes and 18 poppy. How many cakes she had bake?
  • Equation with one variable
    eq1 Solve the following equation with one unknown: 5(7s + 5) =130
  • Addition of Roman numbers
    roman Added together and write as decimal number: LXVII + MLXIV
  • If-then equation
    triangles_10 If 5x - 17 = -x + 7, then x =
  • Temperature 2
    teplomer_4 Sunday's high temperature was 3 degrees higher than Saturday's. On Monday, the temperature fell 5 degrees, then rose 7 degrees on Tuesday and 4 more on Wednesday. Then it fell 17 degrees to a record low of 31 on Thursday. What was the temperature on Satur
  • Jan and Dan
    skolske-zosity Jan and Dan had the same money. Jan bought 5 workbooks and left him 15 CZK. Dan 6 and left him nothing. How much money have in total?
  • Benches
    garden_13 The park has 64 benches. Occupied are by 18 more than empty. How many benches are occupied and empty ?
  • Forest nursery
    stromcek_2 In the forest nursery after winter, they found that 1/10 stems died out of them. For them, they land 193 new spruces. How many spruces are in the forest nursery?
  • Six te 2
    eq1 If 3t-7=5t, then 6t=
  • Cookies
    koláčky Mom bake cookies. Rolo took 2/9 of all cookies, Michal 3/9. How many cookies ate Rolo if Michal had 9.
  • Simple equation 8
    eq1 Solve the following equation: 36=-(1+7x)-6(-7-x)
  • Eq1
    eq1_3 Solve equation: 4(a-3)=3(2a-5)
  • Simple equation 10
    eq1_1 35= 7*3*x what is x?
  • Popsicles
    nanuky Francis went to buy ice lollies. If he buy 8 popsicles he missed 4 USD. When he buy 7 popsicles, got back 1 USD. How many USD was a popsicle?
  • Cakes
    buhty_1 1/3 poppy cake, 1/3 apple, 15 pieces of cheese. How many are totally cakes?