1. АС=14+7=21
21/14=х/12
3/2=х/12
3×12=2х
2х=36
х=18
2.
3. 8/12=6/х
6×12=8х
8х=72
х=9
4. АС=16+8=24
21/16=х/12
16х=21×12
16х=243
х=15,2
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Answers & Comments
1. АС=14+7=21
21/14=х/12
3/2=х/12
3×12=2х
2х=36
х=18
2.
3. 8/12=6/х
6×12=8х
8х=72
х=9
4. АС=16+8=24
21/16=х/12
16х=21×12
16х=243
х=15,2