问题 解答题
(1)4x+3.6=7.2(2)5(x-6)=12×2(3)1.5x=2.8-2x.
答案

(1)4x+3.6=7.2,

     4x+3.6-3.6=7.2-3.6,

             4x=3.6,

          4x÷4=3.6÷4,

              x=0.9;

(2)5×(x-6)=12×2,

  5×(x-6)÷5=12×2÷5,

            x-6=4.8,

          x-6+6=4.8+6,

              x=10.8;

(3)1.5x=2.8-2x,

  1.5x+2x=2.8+2x-2x,

     3.5x=2.8,

3.5x÷3.5=2.8÷3.5,

        x=0.8;

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