Question

Tentukan penyelesaian dari persamaan 2\7 (3n-2)=⅔ (2n+1)

Answer 1

6/7n-4/7=4/3n+2/3
6/7n-4/3n=4/7+2/3
-10/21n=20/21
n=20/21x-21/10
n=-42/21
n=-2

Answer 2

2/7 (3n-2) =2/3(2n+1)
6/7n -4/7 =4/3n+2/3
6/7n -4/3n =2/3 + 4/7
18/21 n- 28/21 n= 14/21 + 12/21
-10/21 n = 26/21
n =26/21 : (-10/21)
n= -2,6