1_1/6 +1_5/6 * (1.854 :1.8 - 1.5 * 2.02)= 7/6+11/6 *( 1.03 - 3.03 )= 7/6+11/6 * (-2) = 7/6 - 22/6 = - 15/6 = - 2.5 Упростите (z - 2) /(2z+4) + (2z +1) /(3z -4)= [(z - 2)(3z-4) +(2z+4)(2z +1)] / [(3z -4)(2z+4)]= [3z^2 +8-6z-4z +4z^2+8z+2z +4] / [(3z -4)(2z+4)]= (7z^2 +12 ) / [(3z -4)(2z+4)]
