Question

Tolong 12 & 13 pakai cara ya

Answer 1

Nomor 12)
y/2+x-3/3y=
=y(3y)/2(3y)+2(x-3)/2(3y)
=3y²/6y +2x-6/6y
=3y²+2x-6/6y

nomor 13)
2/x+2-3/x+3
=(x+2) (x+3)
=(2x+6-3x-6)/(x²+5x+6)
=x/(x²+5x+6)

nomor 11nya)
3ab/2c÷9b²/4ac
=3ab/2c×4ac/9b²
=2a²/b