Question

show your solution
1. x-5y=2
2.x-y=16
3.2x-y=5
4.x-3y=4​

Answer 1

Answer:

In early production, first calcium cyanamide was converted into dicyandiamide, which was heated above its melting temperature to produce melamine. Today most industrial manufacturers use urea in the following reaction to produce melamine: 6 (NH2)2CO → C3H6N6 + 6 NH3 + 3 CO.

Answer 2

Answer:

1. x-5y=2

2.x-y=16

3.2x-y=5

4.x-3y=4