Quisss…. 30/2 +

Jawaban:

(20 – 11)!

= 9!

= 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 72 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 504 × 6 × 5 × 4 × 3 × 2 × 1

= 3.024 × 5 × 4 × 3 × 2 × 1

= 15.120 × 4 × 3 × 2 × 1

= 60.480 × 3 × 2 × 1

= 181.440 × 2 × 1

= 362.880 × 1

= 362.880

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8x + 4 = 8

8x = 8 – 4

8x = 4

8x ÷ 8 = 4 ÷ 8

x = 4 ÷ 8

x = 4/8

x = 1/2

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8x + 4 = 8

8x = 8 – 4

8x = 4

8x ÷ 4 = 4 ÷ 4

2x = 4 ÷ 4

2x = 1

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Penjelasan dengan langkah-langkah:

1)

= (20 – 11)!

= 9!

= 9·8·7·6·5·4·3·2·1

= 15.120·24

= 362.880

2)

8x + 4 = 8

8x = 8 – 4

8x = 4

x = 4/8

x = 1/2