Jawab no 3 dan 4 tolong yang benar

3. y/1 = 2x-3/4x+1 (kali silang)
4xy+y = 2x-3
4xy-2x = -y-3
x(4y-2) = -y-3
x = -y-3/4y-2
f = -x-3/4x-2

f(1) = -x-3/4x-2
f = -1-3/4-2
f = -4/2
f = -2

4. y/1 = x+3/6-x (kali silang)
x+3 = 6y-xy
-6y+3 = -x-xy
-6y+3 = x(-1-y)
-6y+3/-1-y = x
-6x+3/-1-x = f

f(x)=3
3/1 = -6x+3/-1-x (kali silang)
-3-3x = -6x+3
-3-3 = -6x+3x
-6 = -3x
x = 2

(maunya foto tp kamera jelek)

Semoga membantu...

Cara tercepat utk infers
Rumusnya: ax-b/cx+d = dx+b/a-cx

Tp klw yg aq krja pakai langkahnya..