Question

решите уравнение
18(х+14)=378
38х-14х=1608
9(152-7х)=927
14х-х-28=167

Answer 1

18(x + 14) = 378
18x + 252 = 378
18x = 126
x = 7

38x - 14x = 1608
24x = 1608
x = 67

9(152 - 7x) = 927
1368 - 63x = 927
63x = 1368 - 927
63x = 441
x = 7

14x - x - 28 = 167
13x - 28 = 167
13x = 167 + 28
13x = 195
x = 15