Question

aflați termenul necunoscut x dun proportiile:este ex. 4,doar b si c!dau coroana

Answer 1

b) 1/5x=8/9×60/

1/5x=2/9×15/

1/5x=2/135, x≠0

135=10x, 10x=135

x=135/10, x=27/2, x≠0, x=27/2=13 1/2= 13.5

c) 3/4×6/=/x×9/16

1/4×2/=9x/16

1/8=9x/16

16=72x

72x=12

x=16/72, x=2/9, x=0.2(2)    sper ca o sa intelegi.