Question 512072
The difference of two numbers is 8. The first number x is 1 less than twice the second number y. Write and solve a system of linear equations to find the two numbers
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Equations:
x - y = 8
x = 2y -1
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Substitute the expression for "x" into the 1st equation.
Then solve for "y":
(2y-1) - y = 8
2y-y-1 = 8
y - 1 = 8
y = 9
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Now, solve for "x":
x = 2y-1
x = 2*9-1
x = 18-1 = 17
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Solution: x = 17 ; y = 9
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Cheers,
Stan H.
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