解方程.2x+8=11.26x-1.2=9.35x+8=221.2x+0.56=26x-2x=181.5x+1.7x=6

1个回答

  • (1)2x+8=11.26,

    2x+8-8=11.26-8,

    2x=3.26,

    2x÷2=3.26÷2,

    x=1.63;

    (2)x-1.2=9.3,

    x-1.2+1.2=9.3+1.2,

    x=10.5;

    (3)5x+8=22,

    5x+8-8=22-8,

    5x=14,

    5x÷5=14÷5,

    x=2.8;

    (4)1.2x+0.56=2,

    1.2x+0.56-0.56=2-0.56,

    1.2x=1.44,

    1.2x÷1.2=1.44÷1.2,

    x=1.2;

    (5)6x-2x=18,

    4x=18,

    4x÷4=18÷4,

    x=4.5;

    (6)1.5x+1.7x=6.4,

    3.2x=6.4,

    3.2x÷3.2=6.4÷3.2,

    x=2.