Question

solve 4.3t + 6.8t = 8.4t - 7.55 for t.

Answer 1

$4.3t+6.8=8.4t-7.55$

we place the t's on the same side and the other nombers on the other side

$6.8+7.55=8.4t-4.3t$

now do the operations

$14.35=4.1t$

then solve t

$\begin{gathered} t=\frac{14.35}{4.1} \\ \\ t=3.5 \end{gathered}$

the value of t is 3.5 so the rigth option is D