5.6a + 1.25 + 3.15a = 2.7
5,6a + 3,15a = 2,7 – 1,25
8.75a = 1.45
875a = 145
175a = 29
a = 29/175
а=0,16571428571
5,6a+1,25+3,15a=2,7
8,75a=2,7-1,25
8,75а=1,45
а = 1,45/8,75 = 0,166
5.6a + 1.25 + 3.15a = 2.7
5,6a + 3,15a = 2,7 – 1,25
8.75a = 1.45
875a = 145
175a = 29
a = 29/175
а=0,16571428571
5,6a+1,25+3,15a=2,7
8,75a=2,7-1,25
8,75а=1,45
а = 1,45/8,75 = 0,166