Question

Tentukan himpunan persamaan linear berikut :
1. 3z + 11 = -28 = ?
2. 25 - 4y = 6y + 15 = ?
3. -4 - 15 = 1 - 8x = ?
4. 6 per a + 2 = 4 = ?

please bantu, gapapa kalo cuma bisa sedikit asal bantu,

Answer 1

1.
3z + 11 = -28
3z = -28 - 11
3z = -39
z = -39/3
   = -13

2.
25 - 4y = 6y + 15
-4y -6y = 15 - 25
-10y = -10
y = -10/-10
y = 1

3.
-4 - 15 = 1 - 8x
8x = 1 +4 + 15
8x = 20
x = 20/8
x = 2,5

4.
6 per a + 2 = 4

Answer 2

Jawaban no. 4

6 per a + 2 = 4
6 per a = 4-2
6 per a = 2
a = 6 per 2
a = 3