Q. Solve for all values of y in simplest form.14=∣y+9∣Answer: y=
Understand absolute value equation: Understand the absolute value equation.The equation 14=∣y+9∣ means that the expression inside the absolute value, y+9, is either 14 or −14, because the absolute value of a number is its distance from zero on the number line, which is always non-negative.
Set up two equations: Set up two separate equations to solve for y. Since the absolute value of y+9 can be either positive or negative 14, we write: y+9=14 or y+9=−14
Solve first equation: Solve the first equation y+9=14.Subtract 9 from both sides to isolate y:y+9−9=14−9y=5
Solve second equation: Solve the second equation y+9=−14.Subtract 9 from both sides to isolate y:y+9−9=−14−9y=−23
Check solutions: Check the solutions in the original equation.Substitute y=5 into the original equation:14=∣5+9∣14=∣14∣14=14 (True)Now, substitute y=−23 into the original equation:14=∣−23+9∣14=∣−14∣14=14 (True)Both solutions check out.
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