based on the drawing both sides are the same length
so knowing BC = 23 you need to find the value of x and put it in the formula for the side
23=2x+7
16 = 2x
x=8
4x+1 = 4(8)+1 = 33 units
Well, we know the last three numbers are:
3 (ones)
6 (tens)
7 (hundreds)
The next set is:
9 (thousands)
3 (ten thousands)
0 (hundred thousands)
And finally:
6 (millions)
5 (ten millions)
6 (hundred millions)
So we know that 5 is in ten millions.
Yes they are equivalent 18:9 simplified by 9 is 2:1