Question

aflati termenul necunoscut x din proporțiile:ex.5,doar b si c!dau coroana

Answer 1

b--/3×32÷12+1/x =6/5

/8+1/x=6/5

9/x=6/5, x≠0

45=6x, 6x=45

x=45/6

x=15/2, x≠0. x=15/2=7 1/2= 7.5

c-- 3/7=x/2×125÷10-4/

3/7=x/25-4/

3/7=x/21

63=7x, 7x=63

x=9.....dafta