0.8*(3x-14)-0.3*(4-5x) при x=3 1/13

Question

0.8*(3x-14)-0.3*(4-5x) при x=3 1/13

Answer 1

=2,4x-11,2-1,2+1,5x=3,9x-12,4

3,9* 3 1/13 -12,4=39/10*40/13 - 12,4=12 -12,4= -0,4

Comments

спасибо