harley6 harley6
  • 24-02-2016
  • Mathematics
contestada

when 20 is reduced by two thirds of a number the result is 12 what is the number

Respuesta :

sofia448119 sofia448119
  • 24-02-2016
The number is 12, if you split it into 3 parts you get 4 so 2/3 of it would be 8. then you just take 20 ans subtract 8 to get 12.
Answer Link
Okalukato
Okalukato Okalukato
  • 24-02-2016
The equation would be something like
20 - 2/3x = 12

so times it by 3 to get rid of the demoninator

60 - 2x = 36

rearrange

-2x = 36 - 60

solve

-2x = -24

so

x = 12
Answer Link

Otras preguntas

Determine the heat of formation of CO, knowing that the heat of formation of CO2 is 394 kJ / mol and the combustion of 1 mol of CO emits 283 kJ / mol ​
can someone help me on my question pls
What is the position of B on the number line below? Write your answer as a fraction or mixed number. B​
Based on H Chi Minh’s quote, what factor helped the North Vietnamese defeat the Americans?
Which postulate can be used to determine congruence of the triangles then identify the valid congruency statement. Please help!
5. Sean has 56 bills in his pockets. The bills are only fives and tens. If the value of the bills adds up to $495, how many of each bill does he have?
halp me plass halp me
If you were standing right on the North Pole and wanted to walk to the north magnetic pole would you head east, west, or south? Explain Help please
How a person becomes a attorney general
the nth term of this number sequence 2, 4, 6, 8,..