Answer:
the sum of 4 and a number
4 plus a number
1. Use comminutive property to reorder the x and the y
u=yx/5
2. Multiply both side by 5/y
5u/y=x
3. Then y write it in parametric form
X=5u/y
x= 9
y= 9
4x -2y= 18.................equation 1
-4x + 2y= -18...............equation 2
From equation 1
4x= 18 + 2y
x= 18 + 2y/4
substitute 18+2y/4 for x in equation 2
-4(18+2y/4) -2y= 18
-(18+2y)-2y= 18
-18-2y-2y= 18
-18+4y= 18
4y= 18+18
4y= 36
y= 36/4
y= 9
Substitute 9 for y in equation 1
4x-2y= 18
4x-2(9)= 18
4x-18= 18
4x= 18+18
4x= 36
x= 36/4
x= 9
Hence the value of x is 9 and the value of y is 9
Read more on substitution here
brainly.com/question/28112905?referrer=searchResults
#SPJ1
<span>20/7 = 2 6/7
hope it helps
--------------------</span>