Penyelesaian persamaan 1/5
(2m + 1) = 1/4 ( m + 5 ), adalah ….
a. m = 2
b. m = 4
c. m = 5
d. m = 7
Penyelesaian :
1/5( 2m + 1 ) = 1/4
( m + 5 )
1/5( 2m + 1 ) = 1/4 ( m + 5 )
4 ( 2m + 1 ) = 5 (
m + 5 )
8m + 4
= 5m + 25
8m -
5m = 25 – 4
3m = 21
m = 21 : 3
m = 7