Question

Tentukan himpunan penyelesiann nya, jika variabel pd himpunan bilangan bulat :

1. -11 + x = 3

2. 2a + 1 = a - 3

3.12 +3a = 5 + 2a

*pakai caranya*

Answer 1

1. -11 + x = 3
x = 3 + 11
x = 14
2. 2a + 1 = a - 3
2a - a = -3-1
a = -4
3. 12 + 3a = 5 + 2a
3a - 2a = 5 - 12
a = -7

Answer 2

1) -11+x=3
x=3+11
x=14

2) 2a+1=a-3
2a-a=-3-1
a=-4

3) 12+3a=5+2a
12-5=2a-3a
8=-a
a=-8