解方程5x-3x=1.0960.6x+x=6.727x+2.1×1.3=11.131.25×3.2-0.6x=0.42.4×4+8x=204.1x-0.75÷2.5=5.85．

Question

解方程

5x-3x=1.096	0.6x+x=6.72	7x+2.1×1.3=11.13
1.25×3.2-0.6x=0.4	2.4×4+8x=20	4.1x-0.75÷2.5=5.85．

Answer 1

（1）5x-3x=1.096
                    2x=1.096
                2x÷2=1.096÷2
                      x=0.548

（2）0.6x+x=6.72
            1.6x=6.72
     1.6x÷1.6=6.72÷1.6
                x=4.2

（3）7x+2.1×1.3=11.13
             7x+2.73=11.13
      7x+2.73-2.73=11.13-2.73
                      7x=8.4
                  7x÷7=8.4÷7
                        x=1.2

（4）1.25×3.2-0.6x=0.4
                    4-0.6x=0.4
            4-0.6x+0.6x=0.4+0.6x
                 0.4+0.6x=4
           0.4+0.6x-0.4=4-0.4
                        0.6x=3.6
                 0.6x÷0.6=3.6÷0.6
                            x=6

（5）2.4×4+8x=20
            9.6+8x=20
      9.6+8x-9.6=20-9.6
                   8x=10.4
               8x÷8=10.4÷8
                     x=1.3

（6）4.1x-0.75÷2.5=5.85
                 4.1x-0.3=5.85
           4.1x-0.3+0.3=5.85+0.3
                        4.1x=6.15
                 4.1x÷4.1=6.15÷4.1
                            x=1.5