This is the concept of numbers, given that the G.C.D two numbers (a,b)=6 and the L.C.M (a,b)=180, to find the possible number we do as follows;
L.C.M =a*b=180
since 6 is a multiple of a and b, then the numbers could be:
180/6
=30
hence these numbers could be (6,30)
If I understand ur question correctly, the first one:
(16x^4)^(1/4) = 2*abs(x)
2y is in the first equation so if you change 0.5x+y=17 to y=17-0.5x and then double it to 2y=34-x, you can substitute and find x. And then you can find out y.
How to find x:
0.5x+y=17
y=17-0.5x
2y=34-x
3x-2y=8
3x-34-x=8
<u>x=21</u>
How to find y (with previous info.)
x=21
3x-2y=8
3*21-2y=8
63-8=2y
55=2y
<u>27.5=y</u>
