Let's solve your equation step-by-step.(1 3/5)(t−6)= −0.4Step 1: Simplify both sides of the equation.8/5t + −48/5= −0.4Step 2: Add 48/5 to both sides.8/5t + −48/5 + 48/5 = −0.4 + 48/58/5t = 46/5Step 3: Multiply both sides by 5/8.(5/8)*(8/5t)=(5/8)*(46/5)t=23/4Answer:t = 5 3/4