Question

(4/5-x)+13/20=25/30

Answer 1

( 45 - X ) = 2530 - 1320 = 5060 - 3960 = 1160
X = 45 - 1160
X = 4860 - 1160 
X = 3760

Answer 2

(4/5-х)+13/20=25/30
4/5-х=25/30-13/20
4/5-х=50-39/60
4/5-х=11/60
х=4/5-11/60
х=48-11/60=37/60
х=37/60