To solve the expression (9)÷(54)×(79)×(−5)÷(72), we follow the order of operations.
Step 1: Perform the division operation (9)÷(54). This equals 1/6.
Step 2: Multiply the result of step 1 by 79. (1/6) * 79 equals 79/6.
Step 3: Multiply the result of step 2 by -5. (79/6) * (-5) equals -395/6.
Step 4: Divide the result of step 3 by 72. (-395/6) ÷ 72 equals -395/432.
Therefore, the answer is -395/432 or approximately -0.914.