Hema thinks of a number and subtract 4/5 from it. She multiples the result by 5 the result obtain in four times the original she had of. What is the number?
Answers
The answer of your question is:
first, let the required number be a variable say X
So,
we can make a two equations from the question.
the first requirement : we multiply the number by 5 and subtract 4
the first equation: 5X-4= Y
I referred to the result of the equation as Y
the second requirement: we add 3 to the number and then double the result
the second equation: (3+X)*2=Y
6+2X=Y
the same result of the first equation, Y
Then, we solve the two equations for X either by substitution or omitting
I have chosen omitting to solve the problem.
5X-4=Y (1)
2X+6=Y (2)
by subtracting (2) from (1) we get the following:
3X-10=0 so,
3X=10 then,
X= 10/3
the number which satisfy the two equations is 10/3 = X
we can check by solving the two equations for 10/3 and it will have the same result
I hope this answered your question.
plz plz mark as a brain list plz plz plz
Answer:
4
Step-by-step explanation:
let the number be x
x-4/5= 5x-4/5
5x-4/5×5=4x
5x-4=4x
x=4
ex..
let the number be 4
20-4=4(4)
16 = 16
hence the answer is 4
if this is ok for u comment me..