8x-354=38.477-35.607
8x-354=2.87
8x=2.87+354
8x=356.87
x=44.6
4*3=12 ; 12+8= 20; 20:2=10; 10+11= 21; 21:7=3; 3*3=9; 9-5=4
Число 3
Д) (15-7)^2 : 2^3 - 8^2 :2^3 = (2^3)^2:2^3 = 2^3 = 8
е) (17-16)^8 + 2^5 = 1+32 = 33
ж) 10^6 - 20^4 = (10^4*10^2) - (10^4*2^4) = 10^4* (10^2 - 2^4) = 10000*(100 - 16) = 10000*84 = 840000
з) 3^4* 10^4 = (3*10)^4 = 30^4 = 810000