Answer:
a. 19/20
B. -5.78
Step-by-step explanation:
Dividing by a fraction is the same as multiplying by its reciprocal. i.e. [tex]\frac{-\frac{2}{3} }{-\frac{8}{9} } =-\frac{2}{3} *-\frac{9}{8} = \frac{3}{4}[/tex] to add to 1/5, change both denominators to 20.
[tex]\frac{3}{4} * \frac{5}{5} = \frac{15}{20}[/tex]
[tex]\frac{1}{5} *\frac{4}{4} =\frac{4}{20}[/tex]
[tex]\frac{15}{20} +\frac{4}{20} = \frac{19}{20}[/tex]
B. Convert all to decimals, then work from the inside out because of the parentheses. -1.6 + 4 = 2.4, 2.4(-0.3) = -0.72, -0.72 - 6.5 = -5.78
