Question

5а-13 • 313 = 3

1,38=5-2т4•13,8

5+3у12•1,2=у+6

Answer 1

5a - 113 = 3
5a = 3 - 113
5a = 2 1213
a = 2 1213 : 5 = 3813 : 5 = 19013 = 14 813