Вычислити пож с 1 по 10

1 Январь 0001



вычислити пож с 1 по 10

  • х + 36 = 72 + 15                             7)  36 = 78х — 2х
    х = 72 + 15 — 36                                   36 = 76х
    х = 51                                                   х = 36 : 76
                                                                    х = 9/19
    135 — х = 102 -15
    135 — х = 87                                    8)  45 +30 = 112 — х
    х = 135 — 87                                         75 = 112 — х
    х = 48                                                   х = 112 — 75
                                                                х =37
    2х + 18х + 20х = 151 -31
    40х = 120                                      9)  8у  + 3у  = 77
    х = 30                                                  11у = 77
                                                                 у = 7
    41 — 10 — х — х = 81
    31 — 2х = 81                                  10) 2а +3а +10а — 4а = 11а
    2х = 31 — 81                                          а = 10
    2х = -50                                              11а = 11 * 10 = 110
    х = — 25

    9х — 4х = 135 — 30
    5х = 105
    х = 21

  • 1. х+36=72+15
    х+36=87
    х=87-36
    х=51

    2. 135-х=102-15
    135-х=87
    х=135-87
    х=48

    3. 2х+18х+20х=151-31
    40х=120
    х=120:40
    х=30

    5. 41-10-х-х=81
    31-2х=81
    2х=31-81
    2х= -50
    х= -50:2
    х= -25

    6. 9х-4х=135-30
    5х=105
    х=105:5
    х=21

    8. 45+30=112-х
    х=112-45-30
    х=37

    9. 8у+3у=77
    11у=77
    у=77:11
    у=7

    10. 2а+3а+10а-4а=11а
    при а =10
    11*10=110






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