Matematika Sekolah Menengah Pertama please kak tolong di jawab dengan benar1-8​

noelschneiderulv – May 12, 2023

please kak tolong di jawab dengan benar
1-8​

Jawab:

1. x = 15

2. x = 18

3. x = 35

4. x = 10

5. x = 8

6. x = 15

7. x = 12

8. x = 8

Penjelasan dengan langkah-langkah:

1. 90 = 4x + 2x

90 = 6x

x = 15

2. 90 = x + 4x

90 = 5x

x = 18

3. 90 = x + x + 20

90 - 20 = 2x

70 = 2x

x = 35

4.  90 = 2x + 40 + 3x

90 - 40 = 2x + 3x

50 = 5x

x = 10

5. 90 = 2x + 40 + 3x + 10

90 - 40 - 10 = 2x + 3x

40 = 5x

x = 8

6.  90 = 3x + 20 + x + 10

90 - 20 -10 = 3x + x

60 = 4x

x = 15

7. 90 = 3x + 5 + 2x + 10 + 15

90 - 5 - 10 - 15 = 5x

60 = 5x

x = 12

8. 90 = 20 + 5x +30

90 - 50 = 5x

40 = 5x

x = 8

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