Question

Prosze o pomoc!

(1⅔ - 2¼) · (3½ - 2³/₁₀) : (1¾ - 1¹/₂₀)

Answer 1

=(-5/3-9/4)*(7/2-23/10):(7/4-21/10)=

(20/12-27/12)*(35/10-23/10):(35/20-21/20)=

-7/2*12/10:14/20(skrocic obie 12)=

-7*1/10*20/14 (skrocic 10i20)=

-7*10/14=-70/14=-5