2(x+3)=32 8(x-13)=64 1.5(7-x)=4.5 0.5(6+x)=9 (x+3.2)÷3=8 (x-0.6)÷0.4=1.2.

问题描述:

2(x+3)=32     8(x-13)=64    1.5(7-x)=4.5
0.5(6+x)=9     (x+3.2)÷3=8     (x-0.6)÷0.4=1.2.

(1)2(x+3)=32    
      2(x+3)÷2=32÷2
           x+3-3=16-3
               x=13;
    
(2)8(x-13)=64   
  8(x-13)÷8=64÷8
       x-13+13=8+13
             x=21;
(3)1.5(7-x)=4.5
1.5(7-x)÷1.5=4.5÷1.5
          7-x+x=3+x
            7-3=3+x-3
              x=4;
(4)0.5(6+x)=9
0.5(6+x)÷0.5=9÷0.5
          6+x-6=18-6
              x=12;
(5)(x+3.2)÷3=8
  (x+3.2)÷3×3=8×3
       x+3.2-3.2=24-3.2
               x=20.8;
(6)(x-0.6)÷0.4=1.2
(x-0.6)÷0.4×0.4=1.2×0.4
         x-0.6+0.6=0.48+0.6
                 x=1.08.