Question

Urgenttttt!!! Dau CORONAAAA!!!!​

Answer 1

Răspuns:

a:b=2

a=b×2

b×2:b=2

2×b=2

b=2:2

b=1

a:1=2

a=2×1

a=2

V:2:1=2

a-c=39

a=c+39

C+39-c=39

C=39-39

C=0

A-0=39

A=39-0

A=39

V:39-0=39

B:c=2

B=c×2

C×2:c=2

C=2:2

C=1

B:1=2

B=2:1

B=2

V:2:1=2