15.20 Why are the solutions to the proportions - To and o- the same?
because both result in the equation 8x400, which simplifies to % -5
because both result in the equation 8x. 400, which simplifies to -50
Obecause both result in the equation 40% -80, which simplifies to x-2
because both result in the equation 40x80, which simplifies to X - 20