Let f and s be the ages of the father and the son. We have
From the first equation we derive
Substitute this expression for f in the second equation and we have
The solutions to this equation are s=5 or s=37
Since the sum of the ages must be 42, the solutions would imply
We can only accept the first solution, since the second would imply a son older than his father!
Answer:
x=6
Step-by-step explanation:
Yes, it is a true statement, since the absolute value of any negative number is its opposite -- the positive version of the number.
Inch-Customary
Meter-Metric
Decimeter-Metric
Mile-Customary
Foot-Customary
Ounce-Metric
Gram-Metric
Substitute y = x + 2 into y = 3x - 2
x + 2 = 3x - 2
Solve for x in x + 2 = 3x - 2
x = 2
Substitute x = 2 into y = x + 2
y = 4
Therefore,
<u>x = 2</u>
<u>y = 4</u>
