tolong jawabannya nomor 1,2dan 3

3x + 4 / 5x - 2 + 8x + 1 / -10x + 4
= -2 (3x+4) / -10x + 4 + 8x + 1 / -10x + 4
= (-6x-8) + (  8x + 1 ) / -10x + 4
g(x) = 2x - 7 / -10x + 4
y (-10x + 4) = 2x- 7
-10xy + 4y = 2x - 7
4y + 7 = 2x + 10xy
4y + 7 = x(2+10y)
4y + 7 / 10y + 2 = x
invers f(x) = 4x+7/10x+2