pomoshnik09

Verified answer

X=3.5-2.5x       x+2.5x=3.5      3.5x=3.5      x=3.5/3.5   x=1
2+x0=2+1=3

нлоо

Verified answer

Х=3,5-2,5х
х+2,5=3,5
3,5х=3,5
х=1
2+х0=2+1=3