Question

4z - 5 per 2= z + 21 pe 4 gimana no sob

Answer 1

4z-5/2=z+21/4
4z-z=21/4+5/2
3z=21/4+10/4
z=31/4÷3
z=31/4×1/3
z=31/12=2 7/12
moga bnr y...

Answer 2

4z -5/2 = z + 21/4
------------------------- x4

16z -10 = 4z+21
16z -4z = 21+10
12z = 31
z = 31/12
z = 2 7/12 ( dua tujuh per dua belas)