Question

найти корень уравнения (63-5х):а=6 при а=3, b:(38х-95)=7 при b=133

Answer 1

63 - 5x = 6a
5x = 63 - 6a
5x = 63 - 6*3
5x = 63 - 18
5x = 45
x = 45 : 5
x = 9

2)
38x - 95 = b : 7
38x - 95 = 133 : 7
38x - 95 = 19
38x = 19 + 95
38x = 114
x = 114 : 38
x = 3