In the equation \(0.4 - 7x = 3\), the constants are the numbers that do not change. They are not multiplied by any variables.
In this equation, the constants are:
- \(0.4\)
- \(3\)
The term \(-7x\) involves the variable \(x\) and is not a constant. Thus, the constants in the equation are \(0.4\) and \(3\).