To prove that y = 80 in the equation 120 - 34y = 60, you can follow these steps:
1. Start with the given equation:
120 - 34y = 60
2. Subtract 120 from both sides of the equation to isolate the term with y:
120 - 34y - 120 = 60 - 120
3. Simplify both sides of the equation:
-34y = -60
4. Divide both sides by -34 to solve for y:
(-34y) / (-34) = (-60) / (-34)
5. Simplify the equation further:
y = 60 / 34
6. Simplify the fraction:
y ≈ 1.7647
So, the solution for y is approximately 1.7647, not 80. It seems there might have been an error in your initial statement or equation.