1) x + 8*3 = 30x + 24 = 30x = 300 - 2x = 276
Проверка276 + 8*3 = 276 + 24 = 300
2) x + 540/10 = 9x + 54 = 9x = 92 - 5x = 38
Проверка38 + 540/10 = 38 + 54 = 92
3) 7x = 851 - 157x = 70x = 700 / x = 100
Проверка7*100 = 851 - 15700 = 700
4) 90/a = 600/190/a = 6a = 90/6a = 1.5
Проверка90/1.5 = 660 = 60
Все уравнения решены верно.
1) x + 8*3 = 30
x + 24 = 30
x = 300 - 2
x = 276
Проверка
276 + 8*3 = 276 + 24 = 300
2) x + 540/10 = 9
x + 54 = 9
x = 92 - 5
x = 38
Проверка
38 + 540/10 = 38 + 54 = 92
3) 7x = 851 - 15
7x = 70
x = 700 /
x = 100
Проверка
7*100 = 851 - 15
700 = 700
4) 90/a = 600/1
90/a = 6
a = 90/6
a = 1.5
Проверка
90/1.5 = 6
60 = 60
Все уравнения решены верно.