I think that will be 1000
You can skip 4 in that equation and you'll be left with 2x+12=0, which gives you 2x=-12 and finally, x=-6
Let 
be the cost, respectively, of a notebook and a pen. If you buy 2 notebooks and 3 pens (which we know is a cost of $14.50), you spend 
Similarly, if you buy 1 notebook and 2 pens (which we know is a cost of $7.50), you spend 
These two equations form the following system:
Multiply the second equation by 2:
Subtract the first equation from the second:
So, a pen costs 0.5 dollars. Plug this equation in the second equation:
Answer:
-1
Step-by-step explanation:
It is negative 1 because the signs for the -3 are the same so you keep the -4, change the - to a +, then flip the negative 3.
Hope this helps!
Answer:
36/144
Step-by-step explanation:
6/12 x 6/12
I think this is right
