Search 75,636 tutors
FIND TUTORS
Ask a question
0 0

The difference between the first number and two times the second

The difference between the first number and two times the second
    number is -54, while the sum of three times the first number plus
    twice the second is 94. What is the first number?
Tutors, please sign in to answer this question.

1 Answer

The two equations to be solved are:
x= first number
y= second number
x-2y=-54
3x+2y=94
adding them up we obtain:
4x = 40
x = 10
then we get that y = 32
CHECK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!