Question 1

-2/3 + [3/5 + -5/7]
HELP

Question 2

$\huge\text{Hey there\bf!}$

$\mathsf{-(2)/(3) + [(3)/(5) + -(5)/(7)]}$

$\mathtt{= - (2)/(3) + (3)/(5) + - (5)/(7)}$

$\mathtt{= - (2)/(3) + (3)/(5) - (5)/(7)}$

$\mathtt{-(2*35)/(3*35) + (3*21)/(5*21) - (5*15)/(7*15)}$

$\mathtt{= -(70)/(105) + (63)/(105)- (75)/(105)}$

$\mathtt{= (-70 + 63 - 75)/(105 + 0 - 0)}$

$\mathtt{= (-7 - 75)/(105 - 0)}$

$\mathtt{= (-82)/(105)}$

$\mathtt{= -(82)/(105)}$

$\huge\text{Therefore your answer should be:}$

$\huge\boxed{\mathtt{\mathtt{= -(82)/(105)}}}\huge\checkmark$

$\huge\text{Good luck on your assignment \& enjoy your day!}$

Question 3

Answer:

=-(82)/(105)

Explanation:

$-(2)/(3)+\left[(3)/(5)+\left(-(5)/(7)\right)\right]$

$(3)/(5)+\left(-(5)/(7)\right)$

=-(4)/(35)

=-(2)/(3)-(4)/(35)

=-(82)/(105)

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