Question

repede si rezolvarea si raspunsul

Answer 1

3)78-2,42*(11,5-10)=
=78-2,42*1,5=
=78-3,63=
=74,37
4)a)x+21=35,3
x=35,3-21
x=14,3
b)3x+1<32,02 in N
3x<32,02-1
3x<31,02
x<31,02:3
x<10,34
x€{0;0,1;...;10,33}
5)a)2x-5,3=0,78
2x=0,78+5,3
2x=6,08
x=3,04
b)12-(x-1)=2,4
x-1=12-2,4
x-1=9,6
x=10,6
6)[3:(0,2-0,1)]:[2,5*(0,8+1,2)]
(3:0,1):(2,5*2)=
=30:5=
=6
7)(1+2^2+3^3):2^5+1376^0
(1+4+27):32+1=
=32:32+1=
=1+1=
=2.