Question

Using commutativity and associativity of
addition of national numbers, express each of
the following as a rational number: (-2/3)+(-4/7)+8/3+6/5​

Answer 1

Answer:

276/105

Step-by-step explanation:

Add (-2/3) and (8/3) first. You get 6/3.

Then, find the LCM of 3,5 and 7. It is 105.

Then, convert all the rational numbers so that each gets denominator 105. So, the converted rational numbers are 210/105, (-60/105) and 126/105.

Add all the obtained rational numbers. You get 276/105.