Question

4 * 8-5 =12 symbols to make true number sentences

Answer 1

4x3 =12; true . 4x (8-5)=12

Answer 2

Using Pedmas to get the equation to be true add parenthesis around the 8-5:

4 x (8-5) = 12

This becomes 4 x 3 = 12 which is true.