Question

efectuar la siguiente operación con racionales: (1/3+1/4)-(2/5-1/5)x2/3

Answer 1

(1/3 + 1/4 ) - ( 2/5 -1/5 )× 2/3

(4/12 + 3/12 ) - ( 2/5 - 1/5 ) × 2/3

7/12 -1/5 × 2/3

420/60 -60/60 × 2/3

360/60 × 2/3 = 36/6 ×2/3

6 × 2/ 3=12/3 =4