a. 4a - 11 = 2a + 3 b. 3z + 12 = 15 c. 2 - 6b = 20 d. 3y - 5 = 27 - y Tentukan penyelesaian persamaan linier satu variabel?

a.
4a - 11 = 2a + 3
4a - 2a = 3 + 11
2a = 14
a = 7

b.
3z + 12 = 15
3z = 15-12
z = 3/3 = 1

c.
2 - 6b = 20
-6b = 20 - 2
-6b = 18
b = 18/-6 = -3

d.
3y - 5 = 27 - y
3y + y = 27 + 5
4y = 32
y = 32/4 = 8