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if 4x=28, find the value of 29-5x

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To solve for \( 29 - 5x \) given the equation \( 4x = 28 \), we first need to find the value of \( x \).

  1. Start with the equation: \[ 4x = 28 \]

  2. Divide both sides by 4: \[ x = \frac{28}{4} = 7 \]

Now that we have \( x = 7 \), we can find \( 29 - 5x \).

  1. Substitute \( x \) into the expression \( 29 - 5x \): \[ 29 - 5x = 29 - 5(7) \]

  2. Calculate \( 5(7) \): \[ 5(7) = 35 \]

  3. Now substitute that back into the equation: \[ 29 - 35 = -6 \]

Thus, the value of \( 29 - 5x \) is \(\boxed{-6}\).