Problema Solution
One number is four more than a second number. Two times the first number is 10 more than the four times the second number. Write a phrase that best completes each statement or answers the question
Answer provided by our tutors
Let 'x' be the first number and 'y' the second number.
x = 4 + y (one umber is 4 more then second number)
2*x = 10 + 4*y (two times the first number is 10 more than the four times the second number)
Lets replace x with you 4 + y in the second equation:
2*(4 + y) = 10 + 4*y
8 + 2*y = 10 + 4*y
4*y - 2*y = 8 - 10
2*y = - 2
y = -1
x = 4 + y = 4 - 1 = 3
The first number is 3 and the second is -1.