You need to get y alone for both equations. for x-y=7, you subract x from both sides. (giving you -y = 7 - x) then, multiply the whole equation by -1 to make the y positive, which gives you y = x - 7.
here is the system in y intercept form so you can graph it easier:
*y = x - 7
*y = x + 4
Answer:
see below
Step-by-step explanation:
4(5 - 3x)
The first step is to multiply the 4 by each of the terms inside the parentheses
4*5 - 4*3x
20 -12x
Now subtract the products
20-12x
Please include the instructions. It appears that you want to find the value of m that makes m + 2 1/4 = 8 4/5, but you should state this explicitly.
Rewrite m + 2 1/4 = 8 4/5 as m + 2.25 = 8.80.
Subtr. 2.25 from both sides: m = 6.55 (answer)
This is also equal to 131/20 or 6 11/20.
Next time, would you please insert punctuation in your list of answers, to separate A from B, B from C, and so on.