Well, since the actual size is 900 times as large as the size in blueprint, this would probably be division. If I'm right, you would first do 900 divide by 4 would equal to 225. so the actual size of the dining room is 225.
I hope this helps...
A + 2b + 6c = -9
Multiply the equation by 2,
2a + 4b + 12c = -18
In short, Your Answer would be -18
Hope this helps!
It’s 1,195,742,250,000,000/5,832
