Respuesta :
Answer:
Step-by-step explanation:
a + 2b = 4
3a + 6b = 12
3a + b = 7
5b = 5
b = 1
a = 2 because
2(1) + a = 4
Answer:
- a = 2
- b = 1
Step-by-step explanation:
We know that:
- a + 2b = 4
- 3a + b = 7
Work:
- a + 2b = 4
3a + b = 7
- 3(a + 2b = 4)
3a + b = 7
- 3(a + 2b = 4)
- 3a + b = 7
- 3a + 6b = 12
- 3a + b = 7
- 3a + 6b = 12
- -3a - b = -7
- 5b = 5
- b = 1
Now, let's substitute the value of b into the first equation.
- a + 2b = 4
- => a + 2(1) = 4
- => a + 2 = 4
- => a = 2
Hence, the missing values are:
- a = 2
- b = 1
