Question

Помогите пожалуйста

Answer 1

(-3.7)*(-3)-(-4.2*5)+3=11.7-(-20)+3=11.7+23=34.7
0.5*(-1.5)+(-4)*(-0.1)=-0.75+0.4=1.15
0.2*(-(1:6))-((4:5)*(7:12))=-(0.2:6)-(7:15)=-(1:30)-(14:30)=-(15:30)=0.5
НОД(6,15)= 30