Using a system of equations, it is found that 22 flowers are in George's garden.
In this problem, the variables are:
All the flowers are red except 14, that is, there are 14 that are blue or yellow, hence:
[tex]y + z = 14 \rightarrow z = 14 - y[/tex]
All are blue except 18, that is, there are 18 that are red or yellow, hence:
[tex]x + z = 18 \rightarrow z = 18 - x[/tex]
All are yellow except 12, that is, there are 12 that are red or blue, hence:
[tex]x + y = 12 \rightarrow y = 12 - x[/tex]
From the first two equations:
[tex]14 - y = 18 - x[/tex]
[tex]x - y = 4[/tex]
Since [tex]y = 12 - x[/tex]
[tex]x - 12 + x = 4[/tex]
[tex]2x = 16[/tex]
[tex]x = 8[/tex]
[tex]y = 12 - x = 12 - 8 = 4[/tex]
[tex]z = 18 - x = 18 - 8 = 10[/tex]
The total amount of flowers in the garden is:
[tex]x + y + z = 8 + 4 + 10 = 22[/tex]
To learn more about system of equations, you can take a look at https://brainly.com/question/24342899