Реши уравнения x×2=14+16 ; x×2=27-20; 890-x=700

X*2=14+16           x*2=27-20                     890-x=700
2x=30                   2x=7                             x=800-700
x=30:2                  x=7:2                            x=100
x=15                    x=3.5

X*2=14+16,
2x=30,
x=15.

x*2=27-20,
2x=7,
x=3.5;

890-x=700,
x=890-700,
x=190.