Jungkookadoodldo Jungkookadoodldo 23-10-2017 Mathematics contestada simplify 1/5 b - 5 (2/5 a - 1/10 b) +4 a simplify A 2a - 3/10 b B 2a + 7/10 b C 2a - 7/10 b D 2a +3/10 b