Question

me ajuda.

calculo esta na foto

Answer 1

$t-1=5-\dfrac{t}{4}\\ \\ t-1=\dfrac{20-t}{4}\\ \\ 4\cdot \left(t-1 \right )=20-t\\ \\ 4t-4=20-t\\ \\ 4t+t=20+4\\ \\ 5t=24\\ \\ t=\dfrac{24}{5}$