You can tell how many solutions an equation will have by looking at the coefficients and constants on each side of the equation. In this case, the coefficients of x are the same on both sides (4), but the constants are different (18 on the left side and 5 on the right side).
Since the coefficients of x are the same and the constants are different, this equation has no solution. This means that no value of x will satisfy the equation and make it true.
When you see an equation such as: 4x+18=4x+5 you can tell how many solutions it will have for x. Which is a good explanation of how you can tell?
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