问题 计算题
解方程。
(1)12×6+8x=120(2)3(x-2.1)=8.4
(3)5.06x+0.94x=1.8(4)(2x+3)÷0.5=10
答案

(1)12×6+8x=120

                    8x=120-72

                    8x=48

                      x=6(2)3(x-2.1)=8.4

                      3x=8.4+6.3

                      3x=14.7

                        x=4.9

(3)5.06x十0.94x=1.8

                         6x=1.8

                           x=0.3(4)(2x+3)÷0.5=10

                        2x+3=5

                              x=1

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