Quiz

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1. 12 + 3
2. (-10) – 20 + 45
3. 45x = 5 – 2
4. cos(60°) × 30​

Quiz

Quiz

Penjelasan dengan langkah-langkah:

1. 12 + 3

= 15

  • 12
  • 3
  • ___(+)
  • 15

_______

2. (-10) – 20 + 45

= -30 + 45

= 45 – 30

= 15

_______

3. 45x = 5 – 2

3 = 45x

x = 45 ÷ 3

x = 15

_______

4. cos(60°) × 30

= 0,5 × 30

= 15