(-9-57)*(48 – 60)=792<span>
(34 – (-5))*(-57+30) =-1053</span><span>
( -32 -11)*(-5-(-11))=-258
</span><span>(-15+28)*(-13-(-14)) =13
</span>(34-(-51)):(95-78) =-1
<span>(-28-(-49)):(47-68) =-1</span>
<span>(58-85):(45-54) =3</span>
<span>(-42-24): (18-51)=2</span>
1. 1-5/12=12/12-5/12=7/12 - осталось прочитать
2. 154:7/12=154/1*12/7=22*12=264 стр. - в книге
А)sinA=BC\AB cosA=AC\AB tgA=BC\AC
б)sin B=AC\AB cosB=BC\AB tgB=AC\BC