Question

помогите решить плз
7х(6х-5)+42х=3х(5+14х)+49

Answer 1

42x^2-35x+42x=15x+42x^2+49
-8x=49
x=-6,125

Answer 2

42x^2-35x+42x=15x+42x^2+49
42x^2-35x+42x-15x-42x^2=49
-8x=49
x=49:(-8)
x=-6,125