Calculate X of a math problemI am trying to learn some more math and I got stuck on this: 0.2 X = 140How do I calculate X?EDITSorry I meant to calculate 28 X = 140So that X = 0.2 but how do I calculate it?

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Calculate X of a math problemI am trying to learn some more math and I got stuck on this:      0.2    X    =  140How do I calculate X?EDITSorry I meant to calculate      28    X    =  140So that   X  =  0.2  but how do I calculate it?

Karla Hull · Accepted Answer

0.2          X                =        140                            ⇒                  0.2          X                ×        X        =        140        ×        X                                          ⇒        0.2        =        140        X                                          ⇒        0.2        ×                  1          140                =        140        X        ×                  1          140                                                  ⇒                  0.2          140                =        X                                          ⇒        X        =                              0.2            ×            10                                140            ×            10                          =                  2          1400                =                  1          700                .             P.S. 1 : Multiplying the both sides of      0.2    X    =  140by X gives us      0.2    X    ×  X  =  140  ×  Xi.e.  0.2  =  140  X  .P.S. 2 : Multiplying the both sides of      28    X    =  140by X gives us      28    X    ×  X  =  140  ×  Xi.e.  28  =  140  X  .Then, multiplying the both sides by       1    140   gives us  28  ×      1    140    =  140  X  ×      1    140  i.e.      28    140    =  X  .Then, we have  X  =      28    140    =      28          28      ×      5        =      1    5    =  0.2.

Calculate X of a math problem I am trying to learn some more math and I got stuck on this:

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