Question

Caluculati numarul x , stiind ca a-b=6 si : x+3×a-3×b=20​

Answer 1

x+3xa-3xb=20
x+3x(a-b)=20
x+3x6=20
x+18=20
x=20-18
x=2

Answer 2

a-b=6 ;

x+3×a-3×b=20

x+3×(a-b)=20

x+3×6=20

x+18=20

x=20-18

x=2