Question

10 pontos ! ajudem? 15x-555=0 3x+1=28 5x-2=0 17x-52,5=500 2.10^3+2.10^7 2.10^3+4.10^4 2.10^5-2.10^2 ???

Answer 1

A)15x=555 x=555/15 x=37 B)3x+1=28 3x=28-1 3x=27 x=27/3 x=9 C) 5x-2=0 5x=2 x=2/5 x=0,4 D) 17x-52,5=555 17x=555+52,5 17x=607,5 x=607,5/17 x=35,73 E) 2.10^3+2.10^7 2.1000+2.10000000= 2000+20000000= 20002000 F)2.10^3+4.10^4 2.1000+4.10000= 2000+40000= 42000 G)2.10^5-2.10^2 2.100000-2.100= 200000-200= 199800