9^3/2 = (3²)^3/2 = 3³ = 27
27^2/3 = (3³)^2/3 = 3² = 9
(1/16)^-3/4 = (2⁻⁴)^-3/4 = 2³ = 8
сам пример = 27 + 9 - 8 = 28
(270:х-12)*70=1260
270:х-12=1260:70
270:х-12=18
270:х=18+12
270:х=30
х=270:30
х=9
А)9.8х+12.6-27.6=10.1х
9.8х-10.1х=-12.6+27.6
-0.3х=15
х=15/(-0.3)
х=-50.
б)точно, а где х?