Question

5 целых 3/8 y + 2,25y - 1 целая 9/16 при y =4

Answer 1

5 3/8у+2 1/4у-1 9/16=5 3/8у+2 2/8у-1 9/16=7 5/8у-1 9/16; при у=4:
7 5/8*4-1 9/16=(61*4)/8-1 9/16=30 1/2-1 9/16=30 18/16-1 9/16=28 24/16-9/16=28 15/16.