Question

Помогите номер 6 пожжжж

Answer 1

X/4=20
x=20*4
x=80
80/4=20

k/2=30
k=30*2
k=60
60/2=30

y*5=40
y=40/5
y=8
8*5=40

2*n=18
n=18/2
n=9
9*2=18

x+70=90
x=90-70
x=20
20+70=90

60-z=51
z=60-51
z=9
60-9=51