Question

if a=4 find the value of the expression 3a/5 - 4

Answer 1

-8/5 or -1.6

$\frac{3a}{5} - 4 = \frac{3 \times 4}{5} - \frac{4}{1} \\ = \frac{12}{5} - \frac{4 \times 5}{1 \times 5} = \frac{12}{5} - \frac{20}{5} \\ = \frac{12 - 20}{5} = \frac{ - 8}{5}$