Question 1004197: The sum of three numbers is
129
. The third number is
4
times the first. The first number is
9
more than the second. What are the numbers? Answer by MathLover1(20850) (Show Source):
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let the first number be , the second number , and third number
the sum of three numbers is ; so, we have
.....eq.1
if the third number is times the first, we have
if the first number is more than the second, we have
substitute it in eq.1
.....eq.1
now find other two numbers
=> =>
