Question

Ajutati.ma si pe mine va rog!!!cu exercitiu din poza macar un rand facut de la a) Va rog din suflet!

Answer 1

6x4=5x4+2x2
4x8=5x8-4x2
9x3=9x5-2x9

Answer 2

a) 3x7=5x7-2x7....=>...21=35-14...=>...35-14=21.....=>21=21
    6x4=5x4+1x4...=>... 24=20+4....=>...20+4=24......=>24=24
    4x8=5x8-1x8
    9x3=5x3+4x3
    7x4=5x4+2x4
    6x8=5x8+1x8
    7x3=5x3+2x3

b) 9x8=10x8-1x8
    9x6=10x6-1x6
    8x7=10x7-2x7
    4x9=10x9-6x9
    7x9=10x9-3x9
    8x6=10x6-2x6
    9x8=10x8-1x8
    2x9=10x9-8x9

c) 6x3=2x3+4x3
    8x3=2x3+6x3
    4x7=2x7+2x7
    9x4=2x4+7x4
    3x9=2x9+1x9
    4x8=2x8+2x8
    7x3=2x3+5x3
    3x4=2x4+1x4