+2448 1. \(6/a=18/24\)
2. \(2/5=m/15\)
3. \(n-6/3n=n-5/3n+1\)
4. \(3y-8/12=y/5\)
+129852 We can solve everyone of these by cross-multiplication...so
6/a = 18 /24 cross-multiply
24 * 6 = 18 * a
144 = 18 *a divide both sides by 18
8 = a
I'll do the third one....you try the other two, RP....let me know if you get stuck
n - 6 / 3n = n - 5 / 3n + 1 cross-multiply
(n - 6) (3n + 1) = 3n ( n - 5) simplify
3n^2 - 18n + 1n - 6 = 3n^2 - 15n subtract 3n^2 from both sides
-17n - 6 = - 15n add 17n to both sides
-6 = 2n divide both sides by 2
-3 = n
+2448 2. 2/5=m/15
Cross multiply: 30=5m
Divide by 5
6=m
4. 3y-8/12=y/5
Cross multiply: (3y-8)(5)=12(y)
ugh idk T_T
