The sum of two numbers is 24. The second number is 6 less than the first. Find the numbers. Write a system of equations and solve.
a.
x + y = 24
y = x - 6
(15, 9)
c.
6x + y = 24
y = 12x + 3
(12, 12)
b.
12x + 6y = 24
y - 2x = 0
(9, 15)
d.
x + 6y = 24
4x + y = 16
(16, 8)
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