Question

a (-3)•[(-5)-(-4)=
b 10•[3-(-4)]=
c 10•[3-(-4)+(-2)]=
d (-5)•[(-4)-9+13]=

Answer 1

a)_ (-3).[(-5)+4]= (-3).[-1]=3

b)_ 10.[3+4]= 10.7 = 70

c)_ 10.[3-(-4)-2]= 10.[3+4-2] =10.5 = 50

d)_ (-5).[(-4)+4]= (-5).[0]= 5.0 =0