1) 5/12 a + 7 при a = 4 2)4/9 b + 2/3 при b = 3/4 - вопрос №15127424923343251149569791 от Larakf 27.01.2020 04:35

Question

Математика: 1) 5/12 a + 7 при a = 4 2)4/9 b + 2/3 при b = 3/4 3) 2/5 + 1 1/4 a при a = 1 3/5 4) 2 3/10 b + 1/2 при b = 2 1/2 решить , 50

Larakf · Answer

1) 5/12*4+7=5/3+7/1=26/3=8 2/3 2) 4/9*3/4+2/3=1/3+2/3=3/3=1 3) 2/5+1 1/4*1 3/5=2/5+5/4*8/5=2/5+2/1=12/5=2 2/5 4) 2 3/10*2 1/2+1/2=23/10*5/2+1/2=23/4+1/2=25/4=6 1/4...