A)90z/30=3b)20+6=10x/2xc)2x+6/3=10x+2/2bantu:’

A) 90z/30 = 3
90z = 3.30
90z = 90
z = 90/90
z = 1
b) 20+6 = 10x/2x
26 = 5x
26/5 = x

c)2x+6/3 = 10x+2/2
6/3 – 2/2 = 10x – 2x
12/6 – 6/6 = 8x
6/6 = 8x
1 = 8x
1/8 = x
klo ndak salah si gini. tp maaf klo salah ya