Question

a)7supra25:42supra50
b)625supra15:25supra27:9supra10
c)5intregi si 1supra4x4intregi si1supra2:31intregi si1supra2
d)3intregi si2supra5 :2intregi si4supra15
e)90x{0,2-[1supra90+1supra179x(2intregi si1supra45-1intreg si1supra36)]}:18,5

Answer 1

a)7/25:42/50=7/25 × 50/42= 1/1×2/6=1/3

b)625/15:25/27:9/10=625/15 × 27/25 × 10/9=25/5 × 9/1 × 10/9=
=25/3 × 1/1 × 2/1=50

c) 5intregi si 1/4x4intregi si1/2:31intregi si1/2=
=21/4x9/2:63/2=21/4x9/2×2/63=3/4

d)3intregi si2/5 :2intregi si4/15=
=17/5 :34/15=17/5×15/34=3/2

e)90x{0,2-[1/90+1/179x(2intregi si1/45-1intreg si1/36)]}:18,5 =
=90x{0,2-[1/90+1/179x(91/45-37/36)]}:18,5 =
=90x{0,2-[1/90+1/179x(364-185)/180)]}:185/10 =
=90x{0,2-[1/90+1/179x179/180)]}:37/2 =
=90x{0,2-[1/90+1/180)]}:37/2 =
=90x[0,2-(2+1)/180]:37/2 =
=90x[2/10-1/60]:37/2 =
=90x(12-1)/60:37/2 =
=90x11/60:37/2 =
=3x11/2 ×2/37 =
=33/37