5а-1\3 • 3\13 = 3 1,38=5-2т\4•13,8 5+3у\12•1,2=у+6

Question

5а-1\3 • 3\13 = 3

1,38=5-2т\4•13,8

5+3у\12•1,2=у+6

Answer 1

5a - 1\13 = 3
5a = 3 - 1\13
5a = 2 12\13
a = 2 12\13 : 5 = 38\13 : 5 = 190\13 = 14 8\13