It was -5 celsius in copenhagen and -12 celsius in oslo. which city was colder?

Oslo

Step-by-step explanation:  -12 is below -5.  Therefore it is colder the further below on the temperature

Since -12 is higher than -5, -5 would be a little bit more warmer than -12 and you want the coldest city so it would be Oslo

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions