Based on the given conditions, formulate:
(6r-7s-5t) -(9r - 8t)
Remove the parentheses: 6r - 7s - 5t - 9r + 8t
Reorder and gather like terms:
(6r-9r)-7s+ (-5t + 8t)
Collect coefficients for the like terms:
(6-9) * r - 7s + (-5+8) × t
Calculate the sum or difference:
-3r - 7s + (-5+8) * t
Calculate the sum or difference: -3r - 7s + 3t
Answer: -3r - 7s + 3t