bantu jawab,terimakasii

jika 3x + 3 = -2x + 18

maka nilai x + 1 = ......

3x + 2x = 18 - 3
5x = 15
x = 15/5
x = 3

subtitusi x = 3 ke persamaannya
x + 1
= 3 + 1
= 4 (B)

3x + 3 = -2x +18
5x = 15
x = 3

maka,
x + 1= 4