Question

Efetue:
a) 3/5 + 2/5 - 8/5
b)a/5 + 2a/5 - 6a/5
c)-x/3 + 5x/3 - 6x/3
d)10y/7 - 12y/7 + 3y/7
e)3x+2a/7

Answer 1

a) 3/5 + 2/5 – 8/5

(3 + 2 – 8)/5

(5 – 8)/5

– 3/5

b )a/5 + 2a/5 –  6a/5

(a + 2a – 6a)/5

(3a – 6a)/5

– 3a/5

 

c) – x/3 + 5x/3 – 6x/3
(– x + 5x – 6x)/3

(5x – 7x)/3

– 2x/3

 

d) 10y/7 – 12y/7 + 3y/7
(10y – 12y + 3y)/7

(13y – 12y)/7

y/7

 

e) 3x + 2a/7

Fica como está!