стандартный вид числа: a*10^n,n∈Z
240=2,4*10²
((11a-b)/(96a^2*b^2))*((48a^3b^3)/(121a^2-b^2))= (11a-b)* (48a^3b^3)
-----------------------------------------=
(96a^2*b^2)* (121a^2-b^2)
=аb
------------
22a+2b
Уже решала
<span>X-4 / x-10 = -2
</span>X-4 = -2 * (x-10)
x-4 = -2*x + 20
3*x = 24
<span>x = 8</span>
11×=90
×=90÷11
×=8.18
121×8.18