Question

Answer 1

a: =-1/3-4/3+14/25+11/25+2/7=-5/3+1+2/7=-5/3+9/7

=-35/21+27/21=-8/21

b: =5/4(-5/3+2/5-1/3+8/5)

=5/4(-2+2)=0

c: =\(\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{1}{6}-\dfrac{2}{3}-\dfrac{2}{9}-\dfrac{1}{36}+\dfrac{1}{69}\)

\(=1+\dfrac{-24-8-1}{36}+\dfrac{1}{69}=\dfrac{70}{69}+\dfrac{-31}{36}=\dfrac{127}{828}\)

d: =15/34+19/34+1/3-4/3+3/7

=3/7-1+1=3/7

e: =-5/3(16+2/7-28-2/7)

=-5/3*(-12)=20

g: =5/2+4/7*(-9/8)

=5/2-36/56

=5/2-9/14

=35/14-9/14=26/14=13/7