tentukan jumlah penyelesaian dari persamaan linear satu variabel berikut! a. 2x + 4 = 2 b. 2k - 3 = k + 7 c. 3(a - 2) = a + 2

a.) 2x+4 = 2
2x = 2-4
2x = -2
x = -1

b.) 2k - 3 = k + 7
2k-k = 7+3
k = 10

c.) 3(a - 2) = a + 2
3a-6 = a+2
3a-a = 2+6
2a = 8
a = 8/2
a = 4

a)

2x + 4 = 2
2x = 2 - 4
2x = -2
x = -1

HP = { -1 }

b)

2k -3 = k + 7
2k -k = 7 + 3
1k = 10
k = 10/-1
k = 10

HP = { 10 }

c)

3a -6 = a + 2
3a -a = 2 + 6
2a = 8
a = 8/2 = 4

HP = { 4 }