5×1 3/4

Answer 1

1 3/4 = 1 + 3/4, so, using the distributive property,
5(1+3/4) = 5*1 + 5*3/4 = 5 + 15/4 = 5 + 3 3/4 = 8 3/4

or

5 * 1 3/4 = 5 * 7/4 = 35/4 = 8 3/4