a)
[tex]( - 2 + 9) \times ( - 3) = 7 \times ( - 3) = - 21[/tex]
b)
[tex]( - 4 - 8) \times ( 7 - 11) = - 12 \times ( - 4) = 48[/tex]
c)
[tex] - 4 \times 5 - 7 \times ( - 2) = - 20 + 14 = - 6[/tex]
d)
[tex] \frac{3 - ( - 5)}{ - 4} = \frac{8}{ - 4} = - 2[/tex]
e)
[tex]( - 16 - 8) \div ( - 4 + 10) = - 24 \div 6 = -4[/tex]
f)
[tex]( - 2) \times (5 - 9) - ( - 7 + 3) =( - 2) \times ( - 4) - ( - 4) = 8 + 4 = 12[/tex]
g)
[tex] - 7 + 8 \div ( - 2) - 3 \times ( - 5) = - 7 - 4 + 15 = - 11 + 15 = 4[/tex]
h)
[tex] \frac{(14 - 19) - (27 - ( - 3))}{20 - 25} = \frac{ - 5 - (27 + 3)}{ - 5} = \frac{ - 5 - 30}{ - 5} = \frac{ - 35}{ - 5} = 7[/tex]
