Question

Найти корень уравнения 7(-5+3х)+4х=9

Answer 1

-35 + 21x + 4x = 8
25x = 43
x = 1.72

Answer 2

Там = 9, а не 8)

Answer 3

-35+21x+4x=9

25x=44

x=44:25

x=1.76