PERSAMA LINIER
1)-4
x + 5 = 25 6)
3 x – 7 = 9 + - x
- 4 x = 25 – 5 3 x + 3 = 9 + 7
-4 x = 20 4x = 16
x = 20/-5 x = 16/4
x = -5 x = 4
2)7 x + 6 = 14 + 5 x 7) – 5 –
9 = 2 x
7
x – 5 x = 14 – 6 -14 = 2 x
2 x = 8 -14/2 = x
x = 8/2 -7 = x
x = 4
3)8 x – 5 = 10 + 5 x 8) – 3 –
2 x = 9
8
x – 5 x =10 + 5
- 2 x = 9 + 3
3 x = 15
- 2 x = 12
x = 15/3 x = 12/-2
x = 5 x = - 6
4)12 x – 10 = - 2 x + 18 9) -8 = - 3 x +
4
12
x +2 x = - 18 – 10 - 8 – 4 =
- 3 x
14 x = 28 -12 = - 3 x
x
=28/14 -12/-3 = x
x = 2 4
= x
5)4 y + 25 = - 35 10) 3 x
– 5 = 7 - x
4 y = - 35 – 25 3 x + x = 7 + 5
4
y = - 60 4 x = 12
y
= -60/15 x = 12/4
y = - 4 x = 3
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