SOLUTION: The sum of two numbers is 18. The difference between four times the smaller number and seven is equal to the sum of two times the larger number and five. Find the two numbers.

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Question 230510: The sum of two numbers is 18. The difference between four times the smaller number and seven is
equal to the sum of two times the larger number and five. Find the two numbers.
Answer by checkley77(12569) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=18 or x=18-y
4x-7=2y+5
4(18-y)-7=2y+5
72-4y-7=2y+5
-4y-2y=5-72+7
-6y=-60
y=-60/-6
y=10 ans.
x=18-10
x=8 ans.
Proof:
4*8-7=2*10+5
32-7=20+5
25=25