<span>а)а*36+12=300</span>
<span> 36а=300-12</span>
<span> 36а=288</span>
<span> а=288:36</span>
<span> а=8</span>
<span>б)292:а=1600:400</span>
<span> 292:а=4</span>
<span> а=292:4</span>
<span> а=73</span>
x³y⁶-a³= (xy-a)(x²y⁵+a²)
Ответ: B
X = (4 2/5 * 2 1/2) / (8 4/5)
X = 11 / (8 4/5 )
X= 11 * 5/44
X= 5/4 = 1 1/4
-(4/7) *6 * (-7/3) * -3
-4/7 * (6*(-7)*(-3)/3
-(6*(-7)*(-3)*4/(7*3)
Ответ: -24