Write an algebraic expression of the verbal expression. 18 decreased by 3 times d

1. The word, «decreased by», includes a subtraction operation, which can be represented by the symbol «-».
The give expression indicates that «3 times d» is subtracted or deducted from 18 as shown below:
18-«3 times d»
2. The word, «times», is indicates a multiplication expression.
The phrase, «3 times d», can be represented by the algebraic expression «3d».
Therefore, we can express the entire verbal expression as the algebraic expression:
18-3d