1. (4×17) - (4×7) = 2. (-3×9) + (-3×11) = 3. 5×(30-12) = 4. 8×(50-5) = 5. (-4×20)×(-4×5)

1. (4×17) - (4×7)

= 68 - 28

= 40

2. (-3×9) + (-3×11)

= -27 + (-33)

= -60

3. 5 × (30-12)

= 5 × 18

= 90

4. 8 × (50-5)

= 8 × 45

= 370

5. (-4×20) × (-4×5)

= -80 × (-20)

= 1600

1.(4 x 17) - (4 x 7) = 68 - 28 = 40
2.(-3 x 9) + (-3 x 11) = 27 + 33 = 60
3.5 x (30 - 12) = (5 x 30) - (5 x 12) = 150 - 60 = 90
4.8 x (50 - 5) = (8 x 50) - (8 x 5) = 400 - 40 = 360

maaf kalau salah
maaf juga klau sampai 4 aja aku gk ngerti nomor 5.