Tentukan himpunan penyelesaian dari PLSV dan PTLSV berikut: A.2x + 3 = 9 B.4 - 2x = 2 C.2 - 11r = 38 + r PLISS SAMA CARANYA Y KK

MAPEL = MATEMATIKA
KELAS = 7
BAB = PLSV

A.
2x + 3 = 9
2x = 9 - 3
2x = 6
x = 6/2
x = 3

B.
4 - 2x = 2
-2x = 2 - 4
-2x = -2
x = -2/-2
x = 1

C.
2 - 11r = 38 + r
-11r - r = 38 - 2
-12r = 36
r = 36/-12
r = -3

semoga membantu

A.2x+3=9
2x=9-3
2x=6
x=6:3
x=2
B.4-2x=2
-2x=2-4
-2x=-2
x=-2÷-2
x=1
C. 2-11r=38+r
-11r=38-2+r
-11r=36+r
-r-11r=36
-12r=36
r=36÷-12
r=-3
well done