1:
x:3+48.2=700
x:3+96 =700
x;3 =700-96
x;3 =604
x =604.3
x =1812
255 - 5(x + 3) = 102
5(x + 3) = 255 - 102
5(x + 3) = 153
x + 3 = 153/5
x = 153/5 - 3
x = 3/5
\(255-5.\left(x+3\right)=102\)
\(5.\left(x+3\right)=255-102\)
\(5.\left(x+3\right)=153\)
\(x+3=\frac{153}{5}\)
\(x=\frac{153}{5}-3\)
\(x=\frac{138}{5}=27,6\)
255-5.(x+3)=102
5.(x+3)=255-102
5.(x+3)=153
(x+3)=153:5
(x+3)=3,06
x=3,06-3
x=0,06
