15x + 30y = -10....reduce by dividing by 5
3x + 6y = -2...same as first equation...same line ..means infinite solutions
x=4, because 10+(4*2)=10+8=18 and since it is a rectangle the sides are the same.
<span> 3 </span>1666666667⁄<span>10000000000
</span>
The given expression is:

So, there are two terms in the expression
1)

2) -5
The constant term is -5.
The co-efficient of

is 4.