como despejar 78.4 = 4.9 * t

78.4 = 4.9t

Divide ambos ladosd con 4.9:

78.4 / 4.9 = 4.9t / 4.9

$${\frac{{\mathtt{78.4}}}{{\mathtt{4.9}}}} = {\mathtt{16}}$$

16 = t