Question

Evaluate (1/7+8/-5)+(-3/14+6/-35)

Answer 1

Answer:

first simplying

(1/7-8/5)+(-3/14-16/35)

by cross multiplying we get

(5-56/35)+(-105-224/490)

(-51/35)+(-329/490)

(-51/35 - 329/490)

since the lcm of 35 and 490 is 490

(-51*14/35*14 - 329/490)

(-714-329/490)......since the base is same

(-1043/490)

-2.128 approx...

In 4th step u can do cross multiplication but it will go with bigger values

hope it helps u