Question

Tentukan himpunan penyelesaian dari persamaan linear berikut
a. 24m = 12
b. 3z + 11 = -28
c. 25 - 4y = 6y + 15
d. -4x - 15 = 1- 8x
e. 6/a + 2 = 4

Answer 1

24m = 12
1/24 x 24m = 1/24 x 12
m = 12/24
m = 1/2

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

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

-4x - 15 = 1 - 8x
-4x + 8x - 15 = 1 - 8x + 8x
4x - 15 = 1
4x -15 + 15 = 1 + 15
4x = 16
x = 16/4
x = 4

6/a + 2 = 4
6/a + 2 - 2 = 4 - 2
6/a = 2
6/a x a = 2 x a
6 = 2a
a = 6/2
a = 3