(1 1/2 + 3 3/4 )+×=4,5

Question

(1 1/2 + 3 3/4 )+×=4,5

Answer 1

(3/2+15/4)+х=45/10;
(6/4+15/4)+х=9/2;
21/4+х=18/4;
х=18/4-21/4=-3/4;