<h2>
Greetings!</h2>
Answer:
y =
and x = 
Step-by-step explanation:
To solve simultaneous equations, you need to have the number in front of both x's or y's the same. (signs doesn't matter)
To get -x to -10x we simply need to multiply the first equation by 10:
-x * 10 = -10x
-9y * 10 = -90y
16 * 10 = 160
-10x - 90y = 160
Now we can add the two equations:
-10x + 10x = 0
-90y + 20y = -70y
160 + 20 = 180
-70y = 180
70y = -180
7y = -18
y = 
Now plug
into the second equation:
10x + 20(
) = 20
10x -
= 20
Move the
over to the other side, making it a positive:
10x = 20 + 
10x = 
Divide both sides by 10:
x = 
So y =
and x = 
<h2>Hope this helps!</h2>
Answer:
12
Step-by-step explanation:
36 divided but 3 is 12 so x=12
Answer:
2/4
Step-by-step explanation:
Bonnie and Maria combined = 1/4 + 2/4 = 3/4
Gracie run = 5/4
=> How much farther, f, did Gracie run than Bonnie and Maria combined
= 5/4 - 3/4 = 2/4
So Gracie run 2/4 more than Bonnie and Maria combined
I think p will 2 is this 8th grade math ?