Question

1. 6y - 2 1/2 = 7y - 5/6
2. 3 ( 2x - 1/4 ) = 5 ( x + 1/2 )
3. 4z - 5(per) 2 = z + 21/4
dengan cara . mksh

Answer 1

1. 6y - 3/2 = 7y - 5/6
6y - 7y = 5/2 - 5/6
-y = 15/6 - 5/6
y = -10/6
y = -1 2/3

2. 6x - 3/4 = 5x + 5/2
= 6x - 5x = 3/4 + 5/2
= x = 3/4 + 10/4
= x = 3 1/4

3. 4z - 5 = 2( z +21/4)
= 4z - 5 = 2z + 21/2
= 4z - 2z = 5 + 21/2
= 2z = 15 1/2
= z = 31/2 : 2
= z = 31/4
= z = 7 3/4