Как решить примеры 3x=50-11,2x+ 5x=63
1) 3x = 50 - 11 3x = 39 x = 39/3 x = 13 2) 2x + 5x = 63 7x = 63 x = 63/7 x = 9
спасибо!!!
3X = 50 - 11 3X = 39 X = 39 : 3 X = 13 ----------- 2X + 5X = 63 7X = 63 X = 63 : 7 X = 9