Question

Помогите решить 3(2)
Предпоследние

Answer 1

1) -12.6*0.7+4.8*(-1.7)=-8.82+(-8.16)=-16.98
2)(3.28*0.5+8.06)*9.2-31.79=(1.64+8.06)*
*9.2-31.79=9.7*9.2-31.79=89.24--31.79=57.45
3)(21/4-37/6)*(13/4-0.55)=11/12*2.7=99/40