По правилу пропорции:
1)
(3m+5)*3 = 4*(5m+1)
9m + 15 = 20m + 4
11 = 11m
m = 1
2)
8*(5x+3) = 5*(x-5)
40x + 24 = 5x - 25
35x = -49
x = -49/35 = -7/5
(25*x⁻³/y⁻⁴)*(y²/5*x⁻⁵)=5*x⁻⁶*y²/(y⁻⁴*5*x⁻⁵)=5*x⁻¹*y⁶=5*y⁶/x.
Log(2)x*log(2)(32x)=log(2)x*(log(2)x+5)=log²(20x+5log(20x