In the equation \( 0.4 - 7x = 3 \), the constants are the numerical values that do not change. In this case, the constants are:
- \( 0.4 \)
- \( 3 \)
So the constants in the equation are \( 0.4 \) and \( 3 \). The term \( -7x \) includes the variable \( x \) and the coefficient \( -7 \), but it is not a constant because it depends on the value of \( x \).