Question

expand the expression and combine like terms: 7.4z-5(-1.6z+2.4)

Answer 1

$7.4z-5(-1.6z+2.4) \\ \\ -5 (-1.6z) - 5 \times 2.4 \\ \\ 5 \times 1.6z - 5 \times 2.4 \\ \\ 7.4z + 8z - 12 \\ \\ 15.4z - 12$

The answer is: 15.4z - 12.