Question

решите пожалуйста упр 11

Answer 1

11.
а)=(48/49+1/2)×3/5=(96/98+49/98)×3/5=145/98×3/5=87/98
б)=(1+3/2×2/5)÷4/45=(1+3/5)÷4/45=1 3/5÷4/45=8/5×45/4=2×9=18
в)=(3/2×4/6)×(7/5×10/14)×(13/11×22/26)=2/2×2/2×2/2=1×1×1=1