(2,61-4x):0,03+4,6=90 уравнение

(2,61-4х):0,03+4,6=90(2,61-4х):0,03=90-4,6(2,61-4х):0,03=85,42,61-4х=85,4×0,032,61-4х=2,5624х=2,61-2,5624х=0,048х=0,048:4х=0,012